C2x scanf binary constant handling

C2x adds binary integer constants starting with 0b or 0B, and supports
those constants for the %i scanf format (in addition to the %b format,
which isn't yet implemented for scanf in glibc).  Implement that scanf
support for glibc.

As with the strtol support, this is incompatible with previous C
standard versions, in that such an input string starting with 0b or 0B
was previously required to be parsed as 0 (with the rest of the input
potentially matching subsequent parts of the scanf format string).
Thus this patch adds 12 new __isoc23_* functions per long double
format (12, 24 or 36 depending on how many long double formats the
glibc configuration supports), with appropriate header redirection
support (generally very closely following that for the __isoc99_*
scanf functions - note that __GLIBC_USE (DEPRECATED_SCANF) takes
precedence over __GLIBC_USE (C2X_STRTOL), so the case of GNU
extensions to C89 continues to get old-style GNU %a and does not get
this new feature).  The function names would remain as __isoc23_* even
if C2x ends up published in 2024 rather than 2023.

When scanf %b support is added, I think it will be appropriate for all
versions of scanf to follow C2x rules for inputs to the %b format
(given that there are no compatibility concerns for a new format).

Tested for x86_64 (full glibc testsuite).  The first version was also
tested for powerpc (32-bit) and powerpc64le (stdio-common/ and wcsmbs/
tests), and with build-many-glibcs.py.

127 files changed, 2582 insertions, 29 deletions

diff --git a/NEWS b/NEWS
index 6825780a7b..0f76e7a416 100644
--- a/NEWS
+++ b/NEWS
@@ -14,7 +14,10 @@ Major new features:
   input: strtol, strtoll, strtoul, strtoull, strtol_l, strtoll_l,
   strtoul_l, strtoull_l, strtoimax, strtoumax, strtoq, strtouq, wcstol,
   wcstoll, wcstoul, wcstoull, wcstol_l, wcstoll_l, wcstoul_l,
-  wcstoull_l, wcstoimax, wcstoumax, wcstoq, wcstouq.
+  wcstoull_l, wcstoimax, wcstoumax, wcstoq, wcstouq.  Similarly, the
+  following functions support binary integers prefixed by 0b or 0B as
+  input to the %i format: fscanf, scanf, sscanf, vscanf, vsscanf,
+  vfscanf, fwscanf, wscanf, swscanf, vfwscanf, vwscanf, vswscanf.
 
 Deprecated and removed features, and other changes affecting compatibility:
 
diff --git a/include/stdio.h b/include/stdio.h
index c3e772ad9a..da47d1ce99 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -94,18 +94,34 @@ extern int __isoc99_vscanf (const char *__restrict __format,
 extern int __isoc99_vsscanf (const char *__restrict __s,
 			     const char *__restrict __format,
 			     __gnuc_va_list __arg) __THROW;
+extern int __isoc23_fscanf (FILE *__restrict __stream,
+			    const char *__restrict __format, ...) __wur;
+extern int __isoc23_scanf (const char *__restrict __format, ...) __wur;
+extern int __isoc23_sscanf (const char *__restrict __s,
+			    const char *__restrict __format, ...) __THROW;
+extern int __isoc23_vfscanf (FILE *__restrict __s,
+			     const char *__restrict __format,
+			     __gnuc_va_list __arg) __wur;
+extern int __isoc23_vscanf (const char *__restrict __format,
+			    __gnuc_va_list __arg) __wur;
+extern int __isoc23_vsscanf (const char *__restrict __s,
+			     const char *__restrict __format,
+			     __gnuc_va_list __arg) __THROW;
 
 libc_hidden_proto (__isoc99_sscanf)
 libc_hidden_proto (__isoc99_vsscanf)
 libc_hidden_proto (__isoc99_vfscanf)
+libc_hidden_proto (__isoc23_sscanf)
+libc_hidden_proto (__isoc23_vsscanf)
+libc_hidden_proto (__isoc23_vfscanf)
 
-/* Internal uses of sscanf should call the C99-compliant version.
+/* Internal uses of sscanf should call the C2X-compliant version.
    Unfortunately, symbol redirection is not transitive, so the
    __REDIRECT in the public header does not link up with the above
    libc_hidden_proto.  Bridge the gap with a macro.  */
 #  if !__GLIBC_USE (DEPRECATED_SCANF)
 #   undef sscanf
-#   define sscanf __isoc99_sscanf
+#   define sscanf __isoc23_sscanf
 #  endif
 
 #  if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1  && IS_IN (libc)
@@ -114,12 +130,21 @@ libc_hidden_proto (__isoc99_vfscanf)
 extern __typeof (__isoc99_sscanf) ___ieee128_isoc99_sscanf __THROW;
 extern __typeof (__isoc99_vsscanf) ___ieee128_isoc99_vsscanf __THROW;
 extern __typeof (__isoc99_vfscanf) ___ieee128_isoc99_vfscanf __THROW;
+extern __typeof (__isoc23_sscanf) ___ieee128_isoc23_sscanf __THROW;
+extern __typeof (__isoc23_vsscanf) ___ieee128_isoc23_vsscanf __THROW;
+extern __typeof (__isoc23_vfscanf) ___ieee128_isoc23_vfscanf __THROW;
 libc_hidden_proto (___ieee128_isoc99_sscanf)
 libc_hidden_proto (___ieee128_isoc99_vsscanf)
 libc_hidden_proto (___ieee128_isoc99_vfscanf)
+libc_hidden_proto (___ieee128_isoc23_sscanf)
+libc_hidden_proto (___ieee128_isoc23_vsscanf)
+libc_hidden_proto (___ieee128_isoc23_vfscanf)
 #define __isoc99_sscanf ___ieee128_isoc99_sscanf
 #define __isoc99_vsscanf ___ieee128_isoc99_vsscanf
 #define __isoc99_vfscanf ___ieee128_isoc99_vfscanf
+#define __isoc23_sscanf ___ieee128_isoc23_sscanf
+#define __isoc23_vsscanf ___ieee128_isoc23_vsscanf
+#define __isoc23_vfscanf ___ieee128_isoc23_vfscanf
 #  endif
 
 /* Prototypes for compatibility functions.  */
diff --git a/include/wchar.h b/include/wchar.h
index ea7888f605..fafe7c8e9b 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -288,8 +288,24 @@ extern int __isoc99_vwscanf (const wchar_t *__restrict __format,
 extern int __isoc99_vswscanf (const wchar_t *__restrict __s,
 			      const wchar_t *__restrict __format,
 			      __gnuc_va_list __arg) __THROW;
+extern int __isoc23_fwscanf (__FILE *__restrict __stream,
+			     const wchar_t *__restrict __format, ...);
+extern int __isoc23_wscanf (const wchar_t *__restrict __format, ...);
+extern int __isoc23_swscanf (const wchar_t *__restrict __s,
+			     const wchar_t *__restrict __format, ...)
+     __THROW;
+extern int __isoc23_vfwscanf (__FILE *__restrict __s,
+			      const wchar_t *__restrict __format,
+			      __gnuc_va_list __arg);
+extern int __isoc23_vwscanf (const wchar_t *__restrict __format,
+			     __gnuc_va_list __arg);
+extern int __isoc23_vswscanf (const wchar_t *__restrict __s,
+			      const wchar_t *__restrict __format,
+			      __gnuc_va_list __arg) __THROW;
 libc_hidden_proto (__isoc99_vswscanf)
 libc_hidden_proto (__isoc99_vfwscanf)
+libc_hidden_proto (__isoc23_vswscanf)
+libc_hidden_proto (__isoc23_vfwscanf)
 
 /* Internal functions.  */
 extern size_t __mbsrtowcs_l (wchar_t *dst, const char **src, size_t len,
diff --git a/libio/bits/stdio-ldbl.h b/libio/bits/stdio-ldbl.h
index b54d00b68b..ed68fc4e28 100644
--- a/libio/bits/stdio-ldbl.h
+++ b/libio/bits/stdio-ldbl.h
@@ -28,13 +28,25 @@ __LDBL_REDIR_DECL (vprintf)
 __LDBL_REDIR_DECL (vsprintf)
 #if !__GLIBC_USE (DEPRECATED_SCANF)
 # if defined __LDBL_COMPAT
+#  if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (fscanf, __nldbl___isoc23_fscanf)
+__LDBL_REDIR1_DECL (scanf, __nldbl___isoc23_scanf)
+__LDBL_REDIR1_DECL (sscanf, __nldbl___isoc23_sscanf)
+#  else
 __LDBL_REDIR1_DECL (fscanf, __nldbl___isoc99_fscanf)
 __LDBL_REDIR1_DECL (scanf, __nldbl___isoc99_scanf)
 __LDBL_REDIR1_DECL (sscanf, __nldbl___isoc99_sscanf)
+#  endif
 # elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+#  if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (fscanf, __isoc23_fscanfieee128)
+__LDBL_REDIR1_DECL (scanf, __isoc23_scanfieee128)
+__LDBL_REDIR1_DECL (sscanf, __isoc23_sscanfieee128)
+#  else
 __LDBL_REDIR1_DECL (fscanf, __isoc99_fscanfieee128)
 __LDBL_REDIR1_DECL (scanf, __isoc99_scanfieee128)
 __LDBL_REDIR1_DECL (sscanf, __isoc99_sscanfieee128)
+#  endif
 # else
 #  error bits/stdlib-ldbl.h included when no ldbl redirections are required.
 # endif
@@ -52,13 +64,25 @@ __LDBL_REDIR_DECL (vsnprintf)
 #ifdef	__USE_ISOC99
 # if !__GLIBC_USE (DEPRECATED_SCANF)
 #  if defined __LDBL_COMPAT
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (vfscanf, __nldbl___isoc23_vfscanf)
+__LDBL_REDIR1_DECL (vscanf, __nldbl___isoc23_vscanf)
+__LDBL_REDIR1_DECL (vsscanf, __nldbl___isoc23_vsscanf)
+#   else
 __LDBL_REDIR1_DECL (vfscanf, __nldbl___isoc99_vfscanf)
 __LDBL_REDIR1_DECL (vscanf, __nldbl___isoc99_vscanf)
 __LDBL_REDIR1_DECL (vsscanf, __nldbl___isoc99_vsscanf)
+#   endif
 #  elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (vfscanf, __isoc23_vfscanfieee128)
+__LDBL_REDIR1_DECL (vscanf, __isoc23_vscanfieee128)
+__LDBL_REDIR1_DECL (vsscanf, __isoc23_vsscanfieee128)
+#   else
 __LDBL_REDIR1_DECL (vfscanf, __isoc99_vfscanfieee128)
 __LDBL_REDIR1_DECL (vscanf, __isoc99_vscanfieee128)
 __LDBL_REDIR1_DECL (vsscanf, __isoc99_vsscanfieee128)
+#   endif
 #  else
 #   error bits/stdlib-ldbl.h included when no ldbl redirections are required.
 #  endif
diff --git a/libio/libioP.h b/libio/libioP.h
index a5f00822ab..38507388fd 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -781,6 +781,9 @@ extern off64_t _IO_seekpos_unlocked (FILE *, off64_t, int)
    functions use.  When the flag is set to zero, automatic allocation is
    enabled.
 
+   SCANF_ISOC23_BIN_CST, when set to one, indicates the %i accepts
+   binary constants starting 0b or 0B.
+
    SCANF_LDBL_USES_FLOAT128 is used on platforms where the long double
    format used to be different from the IEC 60559 double format *and*
    also different from the Quadruple 128-bits IEC 60559 format (such as
@@ -793,7 +796,8 @@ extern off64_t _IO_seekpos_unlocked (FILE *, off64_t, int)
    as the previous format on that platform.  */
 #define SCANF_LDBL_IS_DBL		0x0001
 #define SCANF_ISOC99_A			0x0002
-#define SCANF_LDBL_USES_FLOAT128	0x0004
+#define SCANF_ISOC23_BIN_CST		0x0004
+#define SCANF_LDBL_USES_FLOAT128	0x0008
 
 extern int __vfscanf_internal (FILE *fp, const char *format, va_list argp,
 			       unsigned int flags)
diff --git a/libio/stdio.h b/libio/stdio.h
index ed80420a2b..857f02888d 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -430,7 +430,28 @@ extern int sscanf (const char *__restrict __s,
 #include <bits/floatn.h>
 #if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
     && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
-# ifdef __REDIRECT
+# if __GLIBC_USE (C2X_STRTOL)
+#  ifdef __REDIRECT
+extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
+				const char *__restrict __format, ...),
+		       __isoc23_fscanf) __wur;
+extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
+		       __isoc23_scanf) __wur;
+extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
+				    const char *__restrict __format, ...),
+			   __isoc23_sscanf);
+#  else
+extern int __isoc23_fscanf (FILE *__restrict __stream,
+			    const char *__restrict __format, ...) __wur;
+extern int __isoc23_scanf (const char *__restrict __format, ...) __wur;
+extern int __isoc23_sscanf (const char *__restrict __s,
+			    const char *__restrict __format, ...) __THROW;
+#   define fscanf __isoc23_fscanf
+#   define scanf __isoc23_scanf
+#   define sscanf __isoc23_sscanf
+#  endif
+# else
+#  ifdef __REDIRECT
 extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
 				const char *__restrict __format, ...),
 		       __isoc99_fscanf) __wur;
@@ -439,15 +460,16 @@ extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
 extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
 				    const char *__restrict __format, ...),
 			   __isoc99_sscanf);
-# else
+#  else
 extern int __isoc99_fscanf (FILE *__restrict __stream,
 			    const char *__restrict __format, ...) __wur;
 extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
 extern int __isoc99_sscanf (const char *__restrict __s,
 			    const char *__restrict __format, ...) __THROW;
-#  define fscanf __isoc99_fscanf
-#  define scanf __isoc99_scanf
-#  define sscanf __isoc99_sscanf
+#   define fscanf __isoc99_fscanf
+#   define scanf __isoc99_scanf
+#   define sscanf __isoc99_sscanf
+#  endif
 # endif
 #endif
 
@@ -474,7 +496,37 @@ extern int vsscanf (const char *__restrict __s,
 
 /* Same redirection as above for the v*scanf family.  */
 # if !__GLIBC_USE (DEPRECATED_SCANF)
-#  if defined __REDIRECT && !defined __LDBL_COMPAT \
+#  if __GLIBC_USE (C2X_STRTOL)
+#   if defined __REDIRECT && !defined __LDBL_COMPAT	\
+      && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
+extern int __REDIRECT (vfscanf,
+		       (FILE *__restrict __s,
+			const char *__restrict __format, __gnuc_va_list __arg),
+		       __isoc23_vfscanf)
+     __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
+extern int __REDIRECT (vscanf, (const char *__restrict __format,
+				__gnuc_va_list __arg), __isoc23_vscanf)
+     __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
+extern int __REDIRECT_NTH (vsscanf,
+			   (const char *__restrict __s,
+			    const char *__restrict __format,
+			    __gnuc_va_list __arg), __isoc23_vsscanf)
+     __attribute__ ((__format__ (__scanf__, 2, 0)));
+#   elif !defined __REDIRECT
+extern int __isoc23_vfscanf (FILE *__restrict __s,
+			     const char *__restrict __format,
+			     __gnuc_va_list __arg) __wur;
+extern int __isoc23_vscanf (const char *__restrict __format,
+			    __gnuc_va_list __arg) __wur;
+extern int __isoc23_vsscanf (const char *__restrict __s,
+			     const char *__restrict __format,
+			     __gnuc_va_list __arg) __THROW;
+#    define vfscanf __isoc23_vfscanf
+#    define vscanf __isoc23_vscanf
+#    define vsscanf __isoc23_vsscanf
+#   endif
+#  else
+#   if defined __REDIRECT && !defined __LDBL_COMPAT	\
       && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
 extern int __REDIRECT (vfscanf,
 		       (FILE *__restrict __s,
@@ -489,7 +541,7 @@ extern int __REDIRECT_NTH (vsscanf,
 			    const char *__restrict __format,
 			    __gnuc_va_list __arg), __isoc99_vsscanf)
      __attribute__ ((__format__ (__scanf__, 2, 0)));
-#  elif !defined __REDIRECT
+#   elif !defined __REDIRECT
 extern int __isoc99_vfscanf (FILE *__restrict __s,
 			     const char *__restrict __format,
 			     __gnuc_va_list __arg) __wur;
@@ -498,9 +550,10 @@ extern int __isoc99_vscanf (const char *__restrict __format,
 extern int __isoc99_vsscanf (const char *__restrict __s,
 			     const char *__restrict __format,
 			     __gnuc_va_list __arg) __THROW;
-#   define vfscanf __isoc99_vfscanf
-#   define vscanf __isoc99_vscanf
-#   define vsscanf __isoc99_vsscanf
+#    define vfscanf __isoc99_vfscanf
+#    define vscanf __isoc99_vscanf
+#    define vsscanf __isoc99_vsscanf
+#   endif
 #  endif
 # endif
 #endif /* Use ISO C9x.  */
diff --git a/manual/stdio.texi b/manual/stdio.texi
index d7eab1843a..e86aa5933b 100644
--- a/manual/stdio.texi
+++ b/manual/stdio.texi
@@ -3624,7 +3624,8 @@ constant.  The syntax that is recognized is the same as that for the
 @code{strtol} function (@pxref{Parsing of Integers}) with the value
 @code{0} for the @var{base} argument.  (You can print integers in this
 syntax with @code{printf} by using the @samp{#} flag character with the
-@samp{%x}, @samp{%o}, or @samp{%d} conversion.  @xref{Integer Conversions}.)
+@samp{%x}, @samp{%o}, @samp{%b}, or @samp{%d} conversion.
+@xref{Integer Conversions}.)
 
 For example, any of the strings @samp{10}, @samp{0xa}, or @samp{012}
 could be read in as integers under the @samp{%i} conversion.  Each of
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 92a3499a94..a14ee487ea 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -47,6 +47,12 @@ routines := \
   isoc99_vfscanf \
   isoc99_vscanf \
   isoc99_vsscanf \
+  isoc23_fscanf \
+  isoc23_scanf \
+  isoc23_sscanf \
+  isoc23_vfscanf \
+  isoc23_vscanf \
+  isoc23_vsscanf \
   itoa-digits \
   itoa-udigits \
   itowa-digits \
@@ -214,6 +220,10 @@ tests := \
   tst-put-error \
   tst-renameat2 \
   tst-rndseek \
+  tst-scanf-binary-c11 \
+  tst-scanf-binary-c2x \
+  tst-scanf-binary-gnu11 \
+  tst-scanf-binary-gnu89 \
   tst-scanf-round \
   tst-setvbuf1 \
   tst-sprintf \
@@ -415,6 +425,10 @@ CFLAGS-isoc99_vfscanf.c += -fexceptions
 CFLAGS-isoc99_vscanf.c += -fexceptions
 CFLAGS-isoc99_fscanf.c += -fexceptions
 CFLAGS-isoc99_scanf.c += -fexceptions
+CFLAGS-isoc23_vfscanf.c += -fexceptions
+CFLAGS-isoc23_vscanf.c += -fexceptions
+CFLAGS-isoc23_fscanf.c += -fexceptions
+CFLAGS-isoc23_scanf.c += -fexceptions
 
 CFLAGS-dprintf.c += $(config-cflags-wno-ignored-attributes)
 
@@ -440,6 +454,14 @@ CFLAGS-tst-bz11319-fortify2.c += -D_FORTIFY_SOURCE=2
 
 CFLAGS-tst-memstream-string.c += -fno-builtin-fprintf
 
+# Some versions of GCC supported for building glibc do not support -std=c2x, so
+# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# the test as needed.
+CFLAGS-tst-scanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-scanf-binary-c2x.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-scanf-binary-gnu11.c += -std=gnu11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-scanf-binary-gnu89.c += -std=gnu89 -DOBJPFX=\"$(objpfx)\"
+
 CPPFLAGS += $(libio-mtsafe)
 
 $(objpfx)tst-setvbuf1.out: /dev/null $(objpfx)tst-setvbuf1
diff --git a/stdio-common/Versions b/stdio-common/Versions
index 522f302198..4bcfc3fb41 100644
--- a/stdio-common/Versions
+++ b/stdio-common/Versions
@@ -63,6 +63,14 @@ libc {
   GLIBC_2.29 {
     # SHLIB_COMPAT(GLIBC_2_0, GLIBC_2_29) used in iovfscanf.c etc.
   }
+  GLIBC_2.38 {
+    __isoc23_scanf;
+    __isoc23_vscanf;
+    __isoc23_fscanf;
+    __isoc23_vfscanf;
+    __isoc23_sscanf;
+    __isoc23_vsscanf;
+  }
   GLIBC_PRIVATE {
     # global variables
     _itoa_lower_digits;
diff --git a/stdio-common/isoc23_fscanf.c b/stdio-common/isoc23_fscanf.c
new file mode 100644
index 0000000000..dc19f57bec
--- /dev/null
+++ b/stdio-common/isoc23_fscanf.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+/* Read formatted input from STREAM according to the format string FORMAT.  */
+int
+__isoc23_fscanf (FILE *stream, const char *format, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, format);
+  done = __vfscanf_internal (stream, format, arg,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
diff --git a/stdio-common/isoc23_scanf.c b/stdio-common/isoc23_scanf.c
new file mode 100644
index 0000000000..22b5aaebda
--- /dev/null
+++ b/stdio-common/isoc23_scanf.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <libioP.h>
+
+/* Read formatted input from stdin according to the format string FORMAT.  */
+int
+__isoc23_scanf (const char *format, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, format);
+  done = __vfscanf_internal (stdin, format, arg,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
diff --git a/stdio-common/isoc23_sscanf.c b/stdio-common/isoc23_sscanf.c
new file mode 100644
index 0000000000..1da4c53846
--- /dev/null
+++ b/stdio-common/isoc23_sscanf.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libio/strfile.h>
+
+/* Read formatted input from S, according to the format string FORMAT.  */
+int
+__isoc23_sscanf (const char *s, const char *format, ...)
+{
+  va_list arg;
+  int done;
+  _IO_strfile sf;
+  FILE *f = _IO_strfile_read (&sf, s);
+
+  va_start (arg, format);
+  done = __vfscanf_internal (f, format, arg,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
+libc_hidden_def (__isoc23_sscanf)
diff --git a/stdio-common/isoc23_vfscanf.c b/stdio-common/isoc23_vfscanf.c
new file mode 100644
index 0000000000..d1411a2d65
--- /dev/null
+++ b/stdio-common/isoc23_vfscanf.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdio.h>
+
+/* Read formatted input from STREAM according to the format string FORMAT.  */
+int
+__isoc23_vfscanf (FILE *stream, const char *format, va_list args)
+{
+  return __vfscanf_internal (stream, format, args,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__isoc23_vfscanf)
diff --git a/stdio-common/isoc23_vscanf.c b/stdio-common/isoc23_vscanf.c
new file mode 100644
index 0000000000..81be184c3b
--- /dev/null
+++ b/stdio-common/isoc23_vscanf.c
@@ -0,0 +1,27 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdio.h>
+
+/* Read formatted input from STDIN according to the format string FORMAT.  */
+int
+__isoc23_vscanf (const char *format, va_list args)
+{
+  return __vfscanf_internal (stdin, format, args,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
diff --git a/stdio-common/isoc23_vsscanf.c b/stdio-common/isoc23_vsscanf.c
new file mode 100644
index 0000000000..6cc9a89edc
--- /dev/null
+++ b/stdio-common/isoc23_vsscanf.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1993-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libio/strfile.h>
+
+int
+__isoc23_vsscanf (const char *string, const char *format, va_list args)
+{
+  _IO_strfile sf;
+  FILE *f = _IO_strfile_read (&sf, string);
+  return __vfscanf_internal (f, format, args,
+			     SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__isoc23_vsscanf)
diff --git a/stdio-common/tst-scanf-binary-c11.c b/stdio-common/tst-scanf-binary-c11.c
new file mode 100644
index 0000000000..1869bb6881
--- /dev/null
+++ b/stdio-common/tst-scanf-binary-c11.c
@@ -0,0 +1,28 @@
+/* Test scanf functions with C2X binary integers (narrow strings,
+   no extensions to C11).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#undef _GNU_SOURCE
+
+#define CHAR char
+#define FNW
+#define L_(C) C
+#define TEST_C2X 0
+#define STD "c11"
+
+#include <tst-scanf-binary-main.c>
diff --git a/stdio-common/tst-scanf-binary-c2x.c b/stdio-common/tst-scanf-binary-c2x.c
new file mode 100644
index 0000000000..6033b1f375
--- /dev/null
+++ b/stdio-common/tst-scanf-binary-c2x.c
@@ -0,0 +1,31 @@
+/* Test scanf functions with C2X binary integers (narrow strings,
+   no extensions).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Some versions of GCC supported for building glibc do not support
+   -std=c2x.  */
+#undef _GNU_SOURCE
+#define _ISOC2X_SOURCE
+
+#define CHAR char
+#define FNW
+#define L_(C) C
+#define TEST_C2X 1
+#define STD "c2x"
+
+#include <tst-scanf-binary-main.c>
diff --git a/stdio-common/tst-scanf-binary-gnu11.c b/stdio-common/tst-scanf-binary-gnu11.c
new file mode 100644
index 0000000000..4bd49700d7
--- /dev/null
+++ b/stdio-common/tst-scanf-binary-gnu11.c
@@ -0,0 +1,26 @@
+/* Test scanf functions with C2X binary integers (narrow strings,
+   GNU extensions to C11).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define CHAR char
+#define FNW
+#define L_(C) C
+#define TEST_C2X 1
+#define STD "gnu11"
+
+#include <tst-scanf-binary-main.c>
diff --git a/stdio-common/tst-scanf-binary-gnu89.c b/stdio-common/tst-scanf-binary-gnu89.c
new file mode 100644
index 0000000000..5325732f7c
--- /dev/null
+++ b/stdio-common/tst-scanf-binary-gnu89.c
@@ -0,0 +1,26 @@
+/* Test scanf functions with C2X binary integers (narrow strings,
+   GNU extensions to C89).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define CHAR char
+#define FNW
+#define L_(C) C
+#define TEST_C2X 0
+#define STD "gnu89"
+
+#include <tst-scanf-binary-main.c>
diff --git a/stdio-common/tst-scanf-binary-main.c b/stdio-common/tst-scanf-binary-main.c
new file mode 100644
index 0000000000..6b75cb32e5
--- /dev/null
+++ b/stdio-common/tst-scanf-binary-main.c
@@ -0,0 +1,189 @@
+/* Test scanf functions with C2X binary integers.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <wchar.h>
+
+#include <support/check.h>
+#include <support/xstdio.h>
+
+#define CONCAT_(X, Y, Z) X ## Y ## Z
+#define CONCAT(X, Y, Z) CONCAT_ (X, Y, Z)
+#define FNX(FN1, FN2) CONCAT (FN1, FNW, FN2)
+#ifndef STDX
+# define STDX ""
+#endif
+
+#define INFILE OBJPFX "/tst-" STDX "scanf-binary-" STD "-in"
+
+static int
+wrap_vfscanf (FILE *fp, const CHAR *format, ...)
+{
+  va_list ap;
+  va_start (ap, format);
+  int ret = FNX (vf, scanf) (fp, format, ap);
+  va_end (ap);
+  return ret;
+}
+
+static int
+wrap_vscanf (const CHAR *format, ...)
+{
+  va_list ap;
+  va_start (ap, format);
+  int ret = FNX (v, scanf) (format, ap);
+  va_end (ap);
+  return ret;
+}
+
+static int
+wrap_vsscanf (const CHAR *s, const CHAR *format, ...)
+{
+  va_list ap;
+  va_start (ap, format);
+  int ret = FNX (vs, scanf) (s, format, ap);
+  va_end (ap);
+  return ret;
+}
+
+static void
+one_check (const CHAR *s, int expected, char expected_c)
+{
+  int ret;
+  FILE *fp;
+  int ret_i;
+  long int ret_l;
+  long long int ret_ll;
+  char ret_c;
+  fp = xfopen (INFILE, "w");
+  ret = FNX (fput, s) (s, fp);
+  TEST_VERIFY_EXIT (0 <= ret);
+  xfclose (fp);
+
+  if (!TEST_C2X)
+    {
+      expected = 0;
+      expected_c = s[0] == L_('-') ? s[2] : s[1];
+    }
+
+  ret = FNX (s, scanf) (s, L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = FNX (f, scanf) (fp, L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = FNX (, scanf) (L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  ret = wrap_vsscanf (s, L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = wrap_vfscanf (fp, L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = wrap_vscanf (L_("%i %c"), &ret_i, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_i, expected);
+  TEST_COMPARE (ret_c, expected_c);
+
+  ret = FNX (s, scanf) (s, L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = FNX (f, scanf) (fp, L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = FNX (, scanf) (L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  ret = wrap_vsscanf (s, L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = wrap_vfscanf (fp, L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = wrap_vscanf (L_("%li %c"), &ret_l, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_l, expected);
+  TEST_COMPARE (ret_c, expected_c);
+
+  ret = FNX (s, scanf) (s, L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = FNX (f, scanf) (fp, L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = FNX (, scanf) (L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  ret = wrap_vsscanf (s, L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  fp = xfopen (INFILE, "r");
+  ret = wrap_vfscanf (fp, L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+  xfclose (fp);
+  fp = xfreopen (INFILE, "r", stdin);
+  ret = wrap_vscanf (L_("%lli %c"), &ret_ll, &ret_c);
+  TEST_COMPARE (ret, 2);
+  TEST_COMPARE (ret_ll, expected);
+  TEST_COMPARE (ret_c, expected_c);
+}
+
+static int
+do_test (void)
+{
+  one_check (L_("0b101 x"), 5, 'x');
+  one_check (L_("0B101 x"), 5, 'x');
+  one_check (L_("-0b11111 y"), -31, 'y');
+  one_check (L_("-0B11111 y"), -31, 'y');
+  return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/stdio-common/vfscanf-internal.c b/stdio-common/vfscanf-internal.c
index 4fec12345c..d9675bd4b1 100644
--- a/stdio-common/vfscanf-internal.c
+++ b/stdio-common/vfscanf-internal.c
@@ -1428,6 +1428,16 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr,
 		      c = inchar ();
 		    }
 		}
+	      else if ((mode_flags & SCANF_ISOC23_BIN_CST) != 0
+		       && base == 0
+		       && width != 0
+		       && TOLOWER (c) == L_('b'))
+		{
+		  base = 2;
+		  if (width > 0)
+		    --width;
+		  c = inchar ();
+		}
 	      else if (base == 0)
 		base = 8;
 	    }
diff --git a/support/Makefile b/support/Makefile
index a304c5cdc0..d52c472755 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -123,6 +123,7 @@ libsupport-routines = \
   xfclose \
   xfopen \
   xfork \
+  xfreopen \
   xftruncate \
   xgetline \
   xgetsockname \
diff --git a/support/xfreopen.c b/support/xfreopen.c
new file mode 100644
index 0000000000..e2f204cb50
--- /dev/null
+++ b/support/xfreopen.c
@@ -0,0 +1,31 @@
+/* freopen with error checking.
+   Copyright (C) 2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <support/xstdio.h>
+
+#include <support/check.h>
+#include <stdlib.h>
+
+FILE *
+xfreopen (const char *path, const char *mode, FILE *stream)
+{
+  FILE *fp = freopen (path, mode, stream);
+  if (fp == NULL)
+    FAIL_EXIT1 ("could not open %s (mode \"%s\"): %m", path, mode);
+  return fp;
+}
diff --git a/support/xstdio.h b/support/xstdio.h
index 58cc7c0692..5410d42579 100644
--- a/support/xstdio.h
+++ b/support/xstdio.h
@@ -26,6 +26,7 @@ __BEGIN_DECLS
 
 FILE *xfopen (const char *path, const char *mode);
 void xfclose (FILE *);
+FILE *xfreopen (const char *path, const char *mode, FILE *stream);
 
 /* Read a line from FP, using getline.  *BUFFER must be NULL, or a
    heap-allocated pointer of *LENGTH bytes.  Return the number of
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
index 67d476383a..d4ec41bf99 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
@@ -24,7 +24,13 @@ ldbl-extra-routines += isoc99_fwscanf \
 		       isoc99_wscanf \
 		       isoc99_vfwscanf \
 		       isoc99_vswscanf \
-		       isoc99_vwscanf
+		       isoc99_vwscanf \
+		       isoc23_fwscanf \
+		       isoc23_swscanf \
+		       isoc23_wscanf \
+		       isoc23_vfwscanf \
+		       isoc23_vswscanf \
+		       isoc23_vwscanf
 
 tests-internal += test-wcstold-ibm128 test-wcstold-ieee128
 CFLAGS-test-wcstold-ieee128.c += -mfloat128 -mabi=ieeelongdouble -Wno-psabi
@@ -53,7 +59,13 @@ ldbl-extra-routines += printf_size \
 		       isoc99_sscanf \
 		       isoc99_vfscanf \
 		       isoc99_vscanf \
-		       isoc99_vsscanf
+		       isoc99_vsscanf \
+		       isoc23_fscanf \
+		       isoc23_scanf \
+		       isoc23_sscanf \
+		       isoc23_vfscanf \
+		       isoc23_vscanf \
+		       isoc23_vsscanf
 
 # Printing long double values with IEEE binary128 format reuses part
 # of the internal float128 implementation (__printf_fp, __printf_fphex,
@@ -306,6 +318,78 @@ CFLAGS-test-ldouble-compat_totalorder.c += -mabi=ibmlongdouble
 CFLAGS-test-ldouble-compat_totalordermag.c += -mabi=ibmlongdouble
 endif
 
+ifeq ($(subdir), stdio-common)
+tests += tst-ibm128-scanf-binary-c11 \
+	 tst-ibm128-scanf-binary-c2x \
+	 tst-ibm128-scanf-binary-gnu11 \
+	 tst-ibm128-scanf-binary-gnu89 \
+	 tst-ieee128-scanf-binary-c11 \
+	 tst-ieee128-scanf-binary-c2x \
+	 tst-ieee128-scanf-binary-gnu11 \
+	 tst-ieee128-scanf-binary-gnu89
+
+# Some versions of GCC supported for building glibc do not support -std=c2x, so
+# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# the test as needed.
+CFLAGS-tst-ibm128-scanf-binary-c11.c += -mabi=ibmlongdouble -Wno-psabi \
+					-std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-scanf-binary-c2x.c += -mabi=ibmlongdouble -Wno-psabi \
+					-std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-scanf-binary-gnu11.c += -mabi=ibmlongdouble -Wno-psabi \
+					  -std=gnu11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-scanf-binary-gnu89.c += -mabi=ibmlongdouble -Wno-psabi \
+					  -std=gnu89 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-scanf-binary-c11.c += -mfloat128 -mabi=ieeelongdouble \
+					 -Wno-psabi -std=c11 \
+					 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-scanf-binary-c2x.c += -mfloat128 -mabi=ieeelongdouble \
+					 -Wno-psabi -std=c11 \
+					 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-scanf-binary-gnu11.c += -mfloat128 -mabi=ieeelongdouble \
+					   -Wno-psabi -std=gnu11 \
+					   -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-scanf-binary-gnu89.c += -mfloat128 -mabi=ieeelongdouble \
+					   -Wno-psabi -std=gnu89 \
+					   -DOBJPFX=\"$(objpfx)\"
+
+endif
+
+ifeq ($(subdir), wcsmbs)
+tests += tst-ibm128-wscanf-binary-c11 \
+	 tst-ibm128-wscanf-binary-c2x \
+	 tst-ibm128-wscanf-binary-gnu11 \
+	 tst-ibm128-wscanf-binary-gnu89 \
+	 tst-ieee128-wscanf-binary-c11 \
+	 tst-ieee128-wscanf-binary-c2x \
+	 tst-ieee128-wscanf-binary-gnu11 \
+	 tst-ieee128-wscanf-binary-gnu89
+
+# Some versions of GCC supported for building glibc do not support -std=c2x, so
+# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# the test as needed.
+CFLAGS-tst-ibm128-wscanf-binary-c11.c += -mabi=ibmlongdouble -Wno-psabi \
+					 -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-wscanf-binary-c2x.c += -mabi=ibmlongdouble -Wno-psabi \
+					 -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-wscanf-binary-gnu11.c += -mabi=ibmlongdouble -Wno-psabi \
+					   -std=gnu11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ibm128-wscanf-binary-gnu89.c += -mabi=ibmlongdouble -Wno-psabi \
+					   -std=gnu89 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-wscanf-binary-c11.c += -mfloat128 -mabi=ieeelongdouble \
+					  -Wno-psabi -std=c11 \
+					  -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-wscanf-binary-c2x.c += -mfloat128 -mabi=ieeelongdouble \
+					  -Wno-psabi -std=c11 \
+					  -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-wscanf-binary-gnu11.c += -mfloat128 -mabi=ieeelongdouble \
+					    -Wno-psabi -std=gnu11 \
+					    -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-ieee128-wscanf-binary-gnu89.c += -mfloat128 -mabi=ieeelongdouble \
+					    -Wno-psabi -std=gnu89 \
+					    -DOBJPFX=\"$(objpfx)\"
+
+endif
+
 # Add IEEE binary128 files as make targets.
 routines += $(foreach r,$(ldbl-extra-routines),ieee128-$(r))
 
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Versions b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
index d4ffd3762b..c0679a1153 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Versions
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Versions
@@ -258,4 +258,18 @@ libc {
     __qecvtieee128_r;
     __qfcvtieee128_r;
   }
+  GLIBC_2.38 {
+    __isoc23_fscanfieee128;
+    __isoc23_scanfieee128;
+    __isoc23_sscanfieee128;
+    __isoc23_vfscanfieee128;
+    __isoc23_vscanfieee128;
+    __isoc23_vsscanfieee128;
+    __isoc23_fwscanfieee128;
+    __isoc23_swscanfieee128;
+    __isoc23_wscanfieee128;
+    __isoc23_vfwscanfieee128;
+    __isoc23_vswscanfieee128;
+    __isoc23_vwscanfieee128;
+  }
 }
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fscanf.c
new file mode 100644
index 0000000000..6d651a5d3f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fscanf.c
@@ -0,0 +1,36 @@
+/* Wrapper for __isoc23_fscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libio/libioP.h>
+
+extern int
+___ieee128_isoc23_fscanf (FILE *fp, const char *format, ...)
+{
+  va_list arg;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  va_start (arg, format);
+  done = __vfscanf_internal (fp, format, arg, mode_flags);
+  va_end (arg);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_fscanf, __isoc23_fscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fwscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fwscanf.c
new file mode 100644
index 0000000000..f9ba69ba50
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_fwscanf.c
@@ -0,0 +1,36 @@
+/* Wrapper for __isoc23_fwscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_fwscanf (FILE *fp, const wchar_t *format, ...)
+{
+  va_list ap;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  va_start (ap, format);
+  done = __vfwscanf_internal (fp, format, ap, mode_flags);
+  va_end (ap);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_fwscanf, __isoc23_fwscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_scanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_scanf.c
new file mode 100644
index 0000000000..4a128392b8
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_scanf.c
@@ -0,0 +1,36 @@
+/* Wrapper for __isoc23_scanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libio/libioP.h>
+
+extern int
+___ieee128_isoc23_scanf (const char *format, ...)
+{
+  va_list arg;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  va_start (arg, format);
+  done = __vfscanf_internal (stdin, format, arg, mode_flags);
+  va_end (arg);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_scanf, __isoc23_scanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_sscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_sscanf.c
new file mode 100644
index 0000000000..9845e6a282
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_sscanf.c
@@ -0,0 +1,41 @@
+/* Wrapper for __isoc23_sscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <strfile.h>
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_sscanf (const char *string, const char *format, ...)
+{
+  va_list arg;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  _IO_strfile sf;
+  FILE *fp = _IO_strfile_read (&sf, string);
+
+  va_start (arg, format);
+  done = __vfscanf_internal (fp, format, arg, mode_flags);
+  va_end (arg);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_sscanf, __isoc23_sscanfieee128)
+hidden_def (___ieee128_isoc23_sscanf)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_swscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_swscanf.c
new file mode 100644
index 0000000000..b50a2bfbca
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_swscanf.c
@@ -0,0 +1,41 @@
+/* Wrapper for __isoc23_swscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <strfile.h>
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_swscanf (const wchar_t *string, const wchar_t *format, ...)
+{
+  va_list ap;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *fp = _IO_strfile_readw (&sf, &wd, string);
+
+  va_start (ap, format);
+  done = __vfwscanf_internal (fp, format, ap, mode_flags);
+  va_end (ap);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_swscanf, __isoc23_swscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfscanf.c
new file mode 100644
index 0000000000..876cc0c6d0
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfscanf.c
@@ -0,0 +1,30 @@
+/* Wrapper for __isoc23_vfscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libio/libioP.h>
+#include <stdio.h>
+
+extern int
+___ieee128_isoc23_vfscanf (FILE *fp, const char *format, va_list ap)
+{
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfscanf_internal (fp, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vfscanf, __isoc23_vfscanfieee128)
+hidden_def (___ieee128_isoc23_vfscanf)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfwscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfwscanf.c
new file mode 100644
index 0000000000..752b245343
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vfwscanf.c
@@ -0,0 +1,28 @@
+/* Wrapper for __isoc23_vfwscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_vfwscanf (FILE *fp, const wchar_t *format, va_list ap)
+{
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfwscanf_internal (fp, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vfwscanf, __isoc23_vfwscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vscanf.c
new file mode 100644
index 0000000000..ef36bd162f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vscanf.c
@@ -0,0 +1,28 @@
+/* Wrapper for __isoc23_vscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libio/libioP.h>
+
+extern int
+___ieee128_isoc23_vscanf (const char *format, va_list ap)
+{
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfscanf_internal (stdin, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vscanf, __isoc23_vscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vsscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vsscanf.c
new file mode 100644
index 0000000000..5524d788a7
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vsscanf.c
@@ -0,0 +1,32 @@
+/* Wrapper for __isoc23_vsscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <strfile.h>
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_vsscanf (const char *string, const char *format, va_list ap)
+{
+  _IO_strfile sf;
+  FILE *fp = _IO_strfile_read (&sf, string);
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfscanf_internal (fp, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vsscanf, __isoc23_vsscanfieee128)
+hidden_def (___ieee128_isoc23_vsscanf)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vswscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vswscanf.c
new file mode 100644
index 0000000000..4e893f2942
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vswscanf.c
@@ -0,0 +1,33 @@
+/* Wrapper for __isoc23_vswscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <wchar.h>
+#include <strfile.h>
+
+extern int
+___ieee128_isoc23_vswscanf (wchar_t *string, const wchar_t *format, va_list ap)
+{
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *fp = _IO_strfile_readw (&sf, &wd, string);
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfwscanf_internal (fp, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vswscanf, __isoc23_vswscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vwscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vwscanf.c
new file mode 100644
index 0000000000..a68239d9f0
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_vwscanf.c
@@ -0,0 +1,28 @@
+/* Wrapper for __isoc23_vwscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_vwscanf (const wchar_t *format, va_list ap)
+{
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+  return __vfwscanf_internal (stdin, format, ap, mode_flags);
+}
+strong_alias (___ieee128_isoc23_vwscanf, __isoc23_vwscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_wscanf.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_wscanf.c
new file mode 100644
index 0000000000..f596df2a39
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc23_wscanf.c
@@ -0,0 +1,36 @@
+/* Wrapper for __isoc23_wscanf.  IEEE128 version.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libioP.h>
+
+extern int
+___ieee128_isoc23_wscanf (const wchar_t *format, ...)
+{
+  va_list ap;
+  int done;
+  int mode_flags =
+    SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST | SCANF_LDBL_USES_FLOAT128;
+
+  va_start (ap, format);
+  done = __vfwscanf_internal (stdin, format, ap, mode_flags);
+  va_end (ap);
+
+  return done;
+}
+strong_alias (___ieee128_isoc23_wscanf, __isoc23_wscanfieee128)
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c11.c
new file mode 100644
index 0000000000..31706beee6
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-scanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c
new file mode 100644
index 0000000000..f8bb2e4be3
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu11.c
new file mode 100644
index 0000000000..074aeee208
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-scanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu89.c
new file mode 100644
index 0000000000..6091b33cb6
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-scanf-binary-gnu89.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c11.c
new file mode 100644
index 0000000000..4885a8e265
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-wscanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c
new file mode 100644
index 0000000000..bf0c3da75e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu11.c
new file mode 100644
index 0000000000..49ae257fbd
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-wscanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu89.c
new file mode 100644
index 0000000000..a76be283be
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-wscanf-binary-gnu89.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c11.c
new file mode 100644
index 0000000000..2570fcad5c
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-scanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c
new file mode 100644
index 0000000000..d09c21394c
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu11.c
new file mode 100644
index 0000000000..4e08b6417f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-scanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu89.c
new file mode 100644
index 0000000000..a917b3bfef
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-scanf-binary-gnu89.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c11.c
new file mode 100644
index 0000000000..a6a6bae1cd
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-wscanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c
new file mode 100644
index 0000000000..7e2d27c6d2
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu11.c
new file mode 100644
index 0000000000..d81d2d7136
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-wscanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu89.c
new file mode 100644
index 0000000000..f405923e0f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-wscanf-binary-gnu89.c>
diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
index 1d01846476..5b72474aa4 100644
--- a/sysdeps/ieee754/ldbl-opt/Makefile
+++ b/sysdeps/ieee754/ldbl-opt/Makefile
@@ -42,6 +42,10 @@ libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \
 		 isoc99_vscanf isoc99_vfscanf isoc99_vsscanf \
 		 isoc99_wscanf isoc99_fwscanf isoc99_swscanf \
 		 isoc99_vwscanf isoc99_vfwscanf isoc99_vswscanf \
+		 isoc23_scanf isoc23_fscanf isoc23_sscanf \
+		 isoc23_vscanf isoc23_vfscanf isoc23_vsscanf \
+		 isoc23_wscanf isoc23_fwscanf isoc23_swscanf \
+		 isoc23_vwscanf isoc23_vfwscanf isoc23_vswscanf \
 		 nextup nextdown totalorder totalordermag getpayload \
 		 canonicalize setpayload setpayloadsig llogb fmaxmag fminmag \
 		 roundeven fromfp ufromfp fromfpx ufromfpx fadd dadd \
@@ -221,3 +225,43 @@ $(objpfx)tst-nldbl-error.c: tst-ldbl-error.c
 CFLAGS-tst-nldbl-warn.c += -mlong-double-64
 CFLAGS-tst-nldbl-error.c += -mlong-double-64
 endif
+
+ifeq ($(subdir), stdio-common)
+tests += tst-nldbl-scanf-binary-c11 \
+	 tst-nldbl-scanf-binary-c2x \
+	 tst-nldbl-scanf-binary-gnu11 \
+	 tst-nldbl-scanf-binary-gnu89
+
+# Some versions of GCC supported for building glibc do not support -std=c2x, so
+# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# the test as needed.
+CFLAGS-tst-nldbl-scanf-binary-c11.c += -mlong-double-64 -std=c11 \
+				       -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-scanf-binary-c2x.c += -mlong-double-64 -std=c11 \
+				       -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-scanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
+					 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-scanf-binary-gnu89.c += -mlong-double-64 -std=gnu89 \
+					 -DOBJPFX=\"$(objpfx)\"
+
+endif
+
+ifeq ($(subdir), wcsmbs)
+tests += tst-nldbl-wscanf-binary-c11 \
+	 tst-nldbl-wscanf-binary-c2x \
+	 tst-nldbl-wscanf-binary-gnu11 \
+	 tst-nldbl-wscanf-binary-gnu89
+
+# Some versions of GCC supported for building glibc do not support -std=c2x, so
+# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# the test as needed.
+CFLAGS-tst-nldbl-wscanf-binary-c11.c += -mlong-double-64 -std=c11 \
+					-DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-wscanf-binary-c2x.c += -mlong-double-64 -std=c11 \
+					-DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-wscanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
+					  -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-nldbl-wscanf-binary-gnu89.c += -mlong-double-64 -std=gnu89 \
+					  -DOBJPFX=\"$(objpfx)\"
+
+endif
diff --git a/sysdeps/ieee754/ldbl-opt/Versions b/sysdeps/ieee754/ldbl-opt/Versions
index 21a2db6888..5345f1c683 100644
--- a/sysdeps/ieee754/ldbl-opt/Versions
+++ b/sysdeps/ieee754/ldbl-opt/Versions
@@ -84,6 +84,20 @@ libc {
     __nldbl_err; __nldbl_verr; __nldbl_errx; __nldbl_verrx;
     __nldbl_error; __nldbl_error_at_line;
   }
+  GLIBC_2.38 {
+    __nldbl___isoc23_scanf;
+    __nldbl___isoc23_fscanf;
+    __nldbl___isoc23_sscanf;
+    __nldbl___isoc23_vscanf;
+    __nldbl___isoc23_vfscanf;
+    __nldbl___isoc23_vsscanf;
+    __nldbl___isoc23_wscanf;
+    __nldbl___isoc23_fwscanf;
+    __nldbl___isoc23_swscanf;
+    __nldbl___isoc23_vwscanf;
+    __nldbl___isoc23_vfwscanf;
+    __nldbl___isoc23_vswscanf;
+  }
 }
 libm {
   NLDBL_VERSION {
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
index c654ebe416..22112c54d4 100644
--- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.c
@@ -45,6 +45,10 @@ libc_hidden_proto (__nldbl___isoc99_vsscanf)
 libc_hidden_proto (__nldbl___isoc99_vfscanf)
 libc_hidden_proto (__nldbl___isoc99_vswscanf)
 libc_hidden_proto (__nldbl___isoc99_vfwscanf)
+libc_hidden_proto (__nldbl___isoc23_vsscanf)
+libc_hidden_proto (__nldbl___isoc23_vfscanf)
+libc_hidden_proto (__nldbl___isoc23_vswscanf)
+libc_hidden_proto (__nldbl___isoc23_vfwscanf)
 
 /* Compatibility with IEEE double as long double.
    IEEE quad long double is used by default for most programs, so
@@ -992,6 +996,172 @@ __nldbl___isoc99_wscanf (const wchar_t *fmt, ...)
   return ret;
 }
 
+int
+attribute_compat_text_section
+__nldbl___isoc23_vfscanf (FILE *s, const char *fmt, va_list ap)
+{
+  return __vfscanf_internal (s, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__nldbl___isoc23_vfscanf)
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_sscanf (const char *s, const char *fmt, ...)
+{
+  _IO_strfile sf;
+  FILE *f = _IO_strfile_read (&sf, s);
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfscanf_internal (f, fmt, ap,
+			    SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			    | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_vsscanf (const char *s, const char *fmt, va_list ap)
+{
+  _IO_strfile sf;
+  FILE *f = _IO_strfile_read (&sf, s);
+
+  return __vfscanf_internal (f, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__nldbl___isoc23_vsscanf)
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_vscanf (const char *fmt, va_list ap)
+{
+  return __vfscanf_internal (stdin, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_fscanf (FILE *s, const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfscanf_internal (s, fmt, ap,
+			    SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			    | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_scanf (const char *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfscanf_internal (stdin, fmt, ap,
+			    SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			    | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_vfwscanf (FILE *s, const wchar_t *fmt, va_list ap)
+{
+  return __vfwscanf_internal (s, fmt, ap,
+			      SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			      | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__nldbl___isoc23_vfwscanf)
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_swscanf (const wchar_t *s, const wchar_t *fmt, ...)
+{
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *f = _IO_strfile_readw (&sf, &wd, s);
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfwscanf_internal (f, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_vswscanf (const wchar_t *s, const wchar_t *fmt, va_list ap)
+{
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *f = _IO_strfile_readw (&sf, &wd, s);
+
+  return __vfwscanf_internal (f, fmt, ap,
+			      SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			      | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__nldbl___isoc23_vswscanf)
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_vwscanf (const wchar_t *fmt, va_list ap)
+{
+  return __vfwscanf_internal (stdin, fmt, ap,
+			      SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			      | SCANF_ISOC23_BIN_CST);
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_fwscanf (FILE *s, const wchar_t *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfwscanf_internal (s, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
+int
+attribute_compat_text_section
+__nldbl___isoc23_wscanf (const wchar_t *fmt, ...)
+{
+  va_list ap;
+  int ret;
+
+  va_start (ap, fmt);
+  ret = __vfwscanf_internal (stdin, fmt, ap,
+			     SCANF_LDBL_IS_DBL | SCANF_ISOC99_A
+			     | SCANF_ISOC23_BIN_CST);
+  va_end (ap);
+
+  return ret;
+}
+
 void
 __nldbl_argp_error (const struct argp_state *state, const char *fmt, ...)
 {
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
index 7309e8a80f..d514442d87 100644
--- a/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-compat.h
@@ -78,6 +78,18 @@ NLDBL_DECL (__isoc99_swscanf);
 NLDBL_DECL (__isoc99_vwscanf);
 NLDBL_DECL (__isoc99_vfwscanf);
 NLDBL_DECL (__isoc99_vswscanf);
+NLDBL_DECL (__isoc23_scanf);
+NLDBL_DECL (__isoc23_fscanf);
+NLDBL_DECL (__isoc23_sscanf);
+NLDBL_DECL (__isoc23_vscanf);
+NLDBL_DECL (__isoc23_vfscanf);
+NLDBL_DECL (__isoc23_vsscanf);
+NLDBL_DECL (__isoc23_wscanf);
+NLDBL_DECL (__isoc23_fwscanf);
+NLDBL_DECL (__isoc23_swscanf);
+NLDBL_DECL (__isoc23_vwscanf);
+NLDBL_DECL (__isoc23_vfwscanf);
+NLDBL_DECL (__isoc23_vswscanf);
 NLDBL_DECL (argp_error);
 NLDBL_DECL (argp_failure);
 NLDBL_DECL (warn);
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fscanf.c
new file mode 100644
index 0000000000..7b5a0565f7
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fscanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_fscanf (FILE *stream, const char *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vfscanf (stream, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fwscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fwscanf.c
new file mode 100644
index 0000000000..4ecb340143
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_fwscanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_fwscanf (FILE *stream, const wchar_t *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vfwscanf (stream, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_scanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_scanf.c
new file mode 100644
index 0000000000..90ea10c115
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_scanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_scanf (const char *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vfscanf (stdin, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_sscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_sscanf.c
new file mode 100644
index 0000000000..64124e479c
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_sscanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_sscanf (const char *s, const char *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vsscanf (s, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_swscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_swscanf.c
new file mode 100644
index 0000000000..da84c318b2
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_swscanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_swscanf (const wchar_t *s, const wchar_t *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vswscanf (s, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfscanf.c
new file mode 100644
index 0000000000..671aa63ec6
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vfscanf (FILE *s, const char *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vfscanf (s, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfwscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfwscanf.c
new file mode 100644
index 0000000000..b069522cd1
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vfwscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vfwscanf (FILE *s, const wchar_t *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vfwscanf (s, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vscanf.c
new file mode 100644
index 0000000000..f2256f210f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vscanf (const char *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vfscanf (stdin, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vsscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vsscanf.c
new file mode 100644
index 0000000000..96ce46b317
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vsscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vsscanf (const char *string, const char *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vsscanf (string, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vswscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vswscanf.c
new file mode 100644
index 0000000000..0819b55a2c
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vswscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vswscanf (const wchar_t *string, const wchar_t *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vswscanf (string, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vwscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vwscanf.c
new file mode 100644
index 0000000000..f92876ec27
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_vwscanf.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_vwscanf (const wchar_t *fmt, va_list ap)
+{
+  return __nldbl___isoc23_vfwscanf (stdin, fmt, ap);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_wscanf.c b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_wscanf.c
new file mode 100644
index 0000000000..cece258845
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-isoc23_wscanf.c
@@ -0,0 +1,15 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+__isoc23_wscanf (const wchar_t *fmt, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, fmt);
+  done = __nldbl___isoc23_vfwscanf (stdin, fmt, arg);
+  va_end (arg);
+
+  return done;
+}
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c11.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c11.c
new file mode 100644
index 0000000000..f5bc396fcc
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-scanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c
new file mode 100644
index 0000000000..4e0cf7570f
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu11.c
new file mode 100644
index 0000000000..10e228e98a
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-scanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu89.c
new file mode 100644
index 0000000000..c5da04b644
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-scanf-binary-gnu89.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c11.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c11.c
new file mode 100644
index 0000000000..0e66e97cf7
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c11.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-wscanf-binary-c11.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c
new file mode 100644
index 0000000000..7637aab0d4
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu11.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu11.c
new file mode 100644
index 0000000000..106ec38bce
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu11.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-wscanf-binary-gnu11.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu89.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu89.c
new file mode 100644
index 0000000000..61a15619d2
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-gnu89.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-wscanf-binary-gnu89.c>
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index a0419a13d0..ed0c4789eb 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -2294,6 +2294,10 @@ GLIBC_2.36 arc4random_buf F
 GLIBC_2.36 arc4random_uniform F
 GLIBC_2.36 c8rtomb F
 GLIBC_2.36 mbrtoc8 F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2304,6 +2308,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2314,6 +2325,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 62e80648e8..0e2d9c3045 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2633,6 +2633,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2643,6 +2647,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2653,3 +2664,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 9d490fdee8..f1bec1978d 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2730,6 +2730,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2740,6 +2744,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2750,6 +2761,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index 50874e92fc..aa874b88d0 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2394,6 +2394,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2404,6 +2408,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2414,3 +2425,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 544b5b2741..afbd57da6f 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -514,6 +514,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -524,6 +528,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -534,6 +545,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
 GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index da532a0191..e7364cd3fe 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -511,6 +511,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -521,6 +525,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -531,6 +542,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
 GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 6c74a60d69..913fa59215 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2670,6 +2670,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2680,6 +2684,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2690,3 +2701,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 13d30e646f..43af3a9811 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2619,6 +2619,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2629,6 +2633,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2639,6 +2650,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index f5dfa2a20e..af72f8fab0 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2803,6 +2803,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2813,6 +2817,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2823,6 +2834,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 58f1526030..48cbb0fa50 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2568,6 +2568,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2578,6 +2582,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2588,6 +2599,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
index 46ce2437fe..c15884bb0b 100644
--- a/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/loongarch/lp64/libc.abilist
@@ -2154,6 +2154,10 @@ GLIBC_2.36 wprintf F
 GLIBC_2.36 write F
 GLIBC_2.36 writev F
 GLIBC_2.36 wscanf F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2164,6 +2168,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2174,3 +2185,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index f34085ce35..3738db81df 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -515,6 +515,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -525,6 +529,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -535,6 +546,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0x98
 GLIBC_2.4 _IO_2_1_stdin_ D 0x98
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 349377d154..ed13627752 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2746,6 +2746,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2756,6 +2760,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2766,6 +2777,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 38e7fb9b2a..8357738621 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2719,6 +2719,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2729,6 +2733,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2739,3 +2750,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index ec4ca27b75..58c5da583d 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2716,6 +2716,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2726,6 +2730,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2736,3 +2747,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index bd3f3404fb..d3741945cd 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2711,6 +2711,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2721,6 +2725,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2731,6 +2742,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 9b09fab6ec..5319fdc204 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2709,6 +2709,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2719,6 +2723,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2729,6 +2740,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 3b8f2b8ca3..1743ea6eb9 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2717,6 +2717,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2727,6 +2731,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2737,6 +2748,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 497553414d..9b1f53c6ac 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2619,6 +2619,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2629,6 +2633,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2639,6 +2650,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index f67f241498..ae1c6ca1b5 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2758,6 +2758,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2768,6 +2772,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2778,3 +2789,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/or1k/libc.abilist b/sysdeps/unix/sysv/linux/or1k/libc.abilist
index a59a58f44c..a7c572c947 100644
--- a/sysdeps/unix/sysv/linux/or1k/libc.abilist
+++ b/sysdeps/unix/sysv/linux/or1k/libc.abilist
@@ -2140,6 +2140,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2150,6 +2154,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2160,3 +2171,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index a1bcf79955..074fa031a7 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2773,6 +2773,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2783,6 +2787,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2793,6 +2804,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index c0f28aea45..dfcb4bd2d5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2806,6 +2806,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2816,6 +2820,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2826,6 +2837,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index 6b4459964f..63bbccf3f9 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2527,6 +2527,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2537,6 +2541,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2547,6 +2558,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index e90fb502d2..ab85fd61ef 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2829,6 +2829,14 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fscanfieee128 F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_fwscanfieee128 F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_scanfieee128 F
+GLIBC_2.38 __isoc23_sscanf F
+GLIBC_2.38 __isoc23_sscanfieee128 F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2839,6 +2847,20 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_swscanfieee128 F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfscanfieee128 F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vfwscanfieee128 F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vscanfieee128 F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vsscanfieee128 F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vswscanfieee128 F
+GLIBC_2.38 __isoc23_vwscanf F
+GLIBC_2.38 __isoc23_vwscanfieee128 F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2849,3 +2871,17 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __isoc23_wscanfieee128 F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 29be561b60..b716f5c763 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2396,6 +2396,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2406,6 +2410,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2416,3 +2427,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 506a4e6a65..774e777b65 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2596,6 +2596,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2606,6 +2610,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2616,3 +2627,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 976cd741ee..8625135c48 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2771,6 +2771,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2781,6 +2785,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2791,6 +2802,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 909ec927dc..d00c7eb262 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2564,6 +2564,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2574,6 +2578,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2584,6 +2595,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 31a777c4aa..b63037241d 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2626,6 +2626,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2636,6 +2640,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2646,6 +2657,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 8d43e8c952..d80055617d 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2623,6 +2623,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2633,6 +2637,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2643,6 +2654,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 91c552dc4c..5be55c11d2 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2766,6 +2766,10 @@ GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
 GLIBC_2.37 __ppoll64_chk F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2776,6 +2780,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2786,6 +2797,19 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
+GLIBC_2.38 __nldbl___isoc23_fscanf F
+GLIBC_2.38 __nldbl___isoc23_fwscanf F
+GLIBC_2.38 __nldbl___isoc23_scanf F
+GLIBC_2.38 __nldbl___isoc23_sscanf F
+GLIBC_2.38 __nldbl___isoc23_swscanf F
+GLIBC_2.38 __nldbl___isoc23_vfscanf F
+GLIBC_2.38 __nldbl___isoc23_vfwscanf F
+GLIBC_2.38 __nldbl___isoc23_vscanf F
+GLIBC_2.38 __nldbl___isoc23_vsscanf F
+GLIBC_2.38 __nldbl___isoc23_vswscanf F
+GLIBC_2.38 __nldbl___isoc23_vwscanf F
+GLIBC_2.38 __nldbl___isoc23_wscanf F
 GLIBC_2.4 _IO_fprintf F
 GLIBC_2.4 _IO_printf F
 GLIBC_2.4 _IO_sprintf F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index c5c5e5cf9a..475fdaae15 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2591,6 +2591,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2601,6 +2605,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2611,6 +2622,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index e51996e046..6cfb928bc8 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2542,6 +2542,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2552,6 +2556,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2562,6 +2573,7 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 388536b3be..c735097172 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2648,6 +2648,10 @@ GLIBC_2.36 pidfd_open F
 GLIBC_2.36 pidfd_send_signal F
 GLIBC_2.36 process_madvise F
 GLIBC_2.36 process_mrelease F
+GLIBC_2.38 __isoc23_fscanf F
+GLIBC_2.38 __isoc23_fwscanf F
+GLIBC_2.38 __isoc23_scanf F
+GLIBC_2.38 __isoc23_sscanf F
 GLIBC_2.38 __isoc23_strtoimax F
 GLIBC_2.38 __isoc23_strtol F
 GLIBC_2.38 __isoc23_strtol_l F
@@ -2658,6 +2662,13 @@ GLIBC_2.38 __isoc23_strtoul_l F
 GLIBC_2.38 __isoc23_strtoull F
 GLIBC_2.38 __isoc23_strtoull_l F
 GLIBC_2.38 __isoc23_strtoumax F
+GLIBC_2.38 __isoc23_swscanf F
+GLIBC_2.38 __isoc23_vfscanf F
+GLIBC_2.38 __isoc23_vfwscanf F
+GLIBC_2.38 __isoc23_vscanf F
+GLIBC_2.38 __isoc23_vsscanf F
+GLIBC_2.38 __isoc23_vswscanf F
+GLIBC_2.38 __isoc23_vwscanf F
 GLIBC_2.38 __isoc23_wcstoimax F
 GLIBC_2.38 __isoc23_wcstol F
 GLIBC_2.38 __isoc23_wcstol_l F
@@ -2668,3 +2679,4 @@ GLIBC_2.38 __isoc23_wcstoul_l F
 GLIBC_2.38 __isoc23_wcstoull F
 GLIBC_2.38 __isoc23_wcstoull_l F
 GLIBC_2.38 __isoc23_wcstoumax F
+GLIBC_2.38 __isoc23_wscanf F
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index 16ece4c110..b12a3b0750 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -43,6 +43,8 @@ routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
 	    wcsmbsload mbsrtowcs_l \
 	    isoc99_wscanf isoc99_vwscanf isoc99_fwscanf isoc99_vfwscanf \
 	    isoc99_swscanf isoc99_vswscanf \
+	    isoc23_wscanf isoc23_vwscanf isoc23_fwscanf isoc23_vfwscanf \
+	    isoc23_swscanf isoc23_vswscanf \
 	    mbrtoc8 c8rtomb mbrtoc16 c16rtomb mbrtoc32 c32rtomb
 
 strop-tests :=  wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \
@@ -59,7 +61,11 @@ tests := tst-wcstof wcsmbs-tst1 tst-wcsnlen tst-btowc tst-mbrtowc \
 	 tst-wcstol-binary-c11 \
 	 tst-wcstol-binary-c2x \
 	 tst-wcstol-binary-gnu11 \
-	 tst-wcstol-binary-gnu2x
+	 tst-wcstol-binary-gnu2x \
+	 tst-wscanf-binary-c11 \
+	 tst-wscanf-binary-c2x \
+	 tst-wscanf-binary-gnu11 \
+	 tst-wscanf-binary-gnu89
 
 include ../Rules
 
@@ -118,6 +124,10 @@ CFLAGS-isoc99_wscanf.c += -fexceptions
 CFLAGS-isoc99_fwscanf.c += -fexceptions
 CFLAGS-isoc99_vwscanf.c += -fexceptions
 CFLAGS-isoc99_vfwscanf.c += -fexceptions
+CFLAGS-isoc23_wscanf.c += -fexceptions
+CFLAGS-isoc23_fwscanf.c += -fexceptions
+CFLAGS-isoc23_vwscanf.c += -fexceptions
+CFLAGS-isoc23_vfwscanf.c += -fexceptions
 
 CPPFLAGS += $(libio-mtsafe)
 
@@ -134,3 +144,7 @@ CFLAGS-tst-wcstol-binary-c11.c += -std=c11
 CFLAGS-tst-wcstol-binary-c2x.c += -std=c11
 CFLAGS-tst-wcstol-binary-gnu11.c += -std=gnu11
 CFLAGS-tst-wcstol-binary-gnu2x.c += -std=gnu11
+CFLAGS-tst-wscanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-wscanf-binary-c2x.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-wscanf-binary-gnu11.c += -std=gnu11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-wscanf-binary-gnu89.c += -std=gnu89 -DOBJPFX=\"$(objpfx)\"
diff --git a/wcsmbs/Versions b/wcsmbs/Versions
index 1866cd8d6e..2d9391348a 100644
--- a/wcsmbs/Versions
+++ b/wcsmbs/Versions
@@ -59,5 +59,11 @@ libc {
     __isoc23_wcstoull;
     __isoc23_wcstoimax;
     __isoc23_wcstoumax;
+    __isoc23_fwscanf;
+    __isoc23_swscanf;
+    __isoc23_vfwscanf;
+    __isoc23_vswscanf;
+    __isoc23_vwscanf;
+    __isoc23_wscanf;
   }
 }
diff --git a/wcsmbs/bits/wchar-ldbl.h b/wcsmbs/bits/wchar-ldbl.h
index 4c6f850a45..ee4a6391c8 100644
--- a/wcsmbs/bits/wchar-ldbl.h
+++ b/wcsmbs/bits/wchar-ldbl.h
@@ -29,13 +29,25 @@ __LDBL_REDIR_DECL (vwprintf);
 __LDBL_REDIR_DECL (vswprintf);
 # if !__GLIBC_USE (DEPRECATED_SCANF)
 #  if defined __LDBL_COMPAT
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (fwscanf, __nldbl___isoc23_fwscanf)
+__LDBL_REDIR1_DECL (wscanf, __nldbl___isoc23_wscanf)
+__LDBL_REDIR1_DECL (swscanf, __nldbl___isoc23_swscanf)
+#   else
 __LDBL_REDIR1_DECL (fwscanf, __nldbl___isoc99_fwscanf)
 __LDBL_REDIR1_DECL (wscanf, __nldbl___isoc99_wscanf)
 __LDBL_REDIR1_DECL (swscanf, __nldbl___isoc99_swscanf)
+#   endif
 #  elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (fwscanf, __isoc23_fwscanfieee128)
+__LDBL_REDIR1_DECL (wscanf, __isoc23_wscanfieee128)
+__LDBL_REDIR1_DECL (swscanf, __isoc23_swscanfieee128)
+#   else
 __LDBL_REDIR1_DECL (fwscanf, __isoc99_fwscanfieee128)
 __LDBL_REDIR1_DECL (wscanf, __isoc99_wscanfieee128)
 __LDBL_REDIR1_DECL (swscanf, __isoc99_swscanfieee128)
+#   endif
 #  else
 #   error bits/stdlib-ldbl.h included when no ldbl redirections are required.
 #  endif
@@ -54,13 +66,25 @@ __LDBL_REDIR1_DECL (wcstold, __wcstoieee128)
 # endif
 # if !__GLIBC_USE (DEPRECATED_SCANF)
 #  if defined __LDBL_COMPAT
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (vfwscanf, __nldbl___isoc23_vfwscanf)
+__LDBL_REDIR1_DECL (vwscanf, __nldbl___isoc23_vwscanf)
+__LDBL_REDIR1_DECL (vswscanf, __nldbl___isoc23_vswscanf)
+#   else
 __LDBL_REDIR1_DECL (vfwscanf, __nldbl___isoc99_vfwscanf)
 __LDBL_REDIR1_DECL (vwscanf, __nldbl___isoc99_vwscanf)
 __LDBL_REDIR1_DECL (vswscanf, __nldbl___isoc99_vswscanf)
+#   endif
 #  elif __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+#   if __GLIBC_USE (C2X_STRTOL)
+__LDBL_REDIR1_DECL (vfwscanf, __isoc23_vfwscanfieee128)
+__LDBL_REDIR1_DECL (vwscanf, __isoc23_vwscanfieee128)
+__LDBL_REDIR1_DECL (vswscanf, __isoc23_vswscanfieee128)
+#   else
 __LDBL_REDIR1_DECL (vfwscanf, __isoc99_vfwscanfieee128)
 __LDBL_REDIR1_DECL (vwscanf, __isoc99_vwscanfieee128)
 __LDBL_REDIR1_DECL (vswscanf, __isoc99_vswscanfieee128)
+#   endif
 #  else
 #   error bits/stdlib-ldbl.h included when no ldbl redirections are required.
 #  endif
diff --git a/wcsmbs/isoc23_fwscanf.c b/wcsmbs/isoc23_fwscanf.c
new file mode 100644
index 0000000000..90499bb098
--- /dev/null
+++ b/wcsmbs/isoc23_fwscanf.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <wchar.h>
+
+/* Read formatted input from STREAM according to the format string FORMAT.  */
+int
+__isoc23_fwscanf (FILE *stream, const wchar_t *format, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, format);
+  done = __vfwscanf_internal (stream, format, arg,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
diff --git a/wcsmbs/isoc23_swscanf.c b/wcsmbs/isoc23_swscanf.c
new file mode 100644
index 0000000000..75021a0657
--- /dev/null
+++ b/wcsmbs/isoc23_swscanf.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <libio/strfile.h>
+
+/* Read formatted input from S, according to the format string FORMAT.  */
+
+int
+__isoc23_swscanf (const wchar_t *s, const wchar_t *format, ...)
+{
+  va_list arg;
+  int done;
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *f = _IO_strfile_readw (&sf, &wd, s);
+
+  va_start (arg, format);
+  done = __vfwscanf_internal (f, format, arg,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
diff --git a/wcsmbs/isoc23_vfwscanf.c b/wcsmbs/isoc23_vfwscanf.c
new file mode 100644
index 0000000000..6134a84b2e
--- /dev/null
+++ b/wcsmbs/isoc23_vfwscanf.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdio.h>
+#include <wchar.h>
+
+/* Read formatted input from STREAM according to the format string FORMAT.  */
+int
+__isoc23_vfwscanf (FILE *stream, const wchar_t *format, va_list args)
+{
+  return __vfwscanf_internal (stream, format, args,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__isoc23_vfwscanf)
diff --git a/wcsmbs/isoc23_vswscanf.c b/wcsmbs/isoc23_vswscanf.c
new file mode 100644
index 0000000000..77c0e97986
--- /dev/null
+++ b/wcsmbs/isoc23_vswscanf.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1993-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <wchar.h>
+#include <libio/strfile.h>
+
+int
+__isoc23_vswscanf (const wchar_t *string, const wchar_t *format, va_list args)
+{
+  _IO_strfile sf;
+  struct _IO_wide_data wd;
+  FILE *f = _IO_strfile_readw (&sf, &wd, string);
+  return __vfwscanf_internal (f, format, args,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
+libc_hidden_def (__isoc23_vswscanf)
diff --git a/wcsmbs/isoc23_vwscanf.c b/wcsmbs/isoc23_vwscanf.c
new file mode 100644
index 0000000000..95d929268c
--- /dev/null
+++ b/wcsmbs/isoc23_vwscanf.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <libioP.h>
+#include <stdio.h>
+#include <wchar.h>
+
+/* Read formatted input from STDIN according to the format string FORMAT.  */
+int
+__isoc23_vwscanf (const wchar_t *format, va_list args)
+{
+  return __vfwscanf_internal (stdin, format, args,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+}
diff --git a/wcsmbs/isoc23_wscanf.c b/wcsmbs/isoc23_wscanf.c
new file mode 100644
index 0000000000..4fb54438cc
--- /dev/null
+++ b/wcsmbs/isoc23_wscanf.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <libioP.h>
+#include <wchar.h>
+
+
+/* Read formatted input from stdin according to the format string FORMAT.  */
+int
+__isoc23_wscanf (const wchar_t *format, ...)
+{
+  va_list arg;
+  int done;
+
+  va_start (arg, format);
+  done = __vfwscanf_internal (stdin, format, arg,
+			      SCANF_ISOC99_A | SCANF_ISOC23_BIN_CST);
+  va_end (arg);
+
+  return done;
+}
diff --git a/wcsmbs/tst-wscanf-binary-c11.c b/wcsmbs/tst-wscanf-binary-c11.c
new file mode 100644
index 0000000000..cd1127ef5e
--- /dev/null
+++ b/wcsmbs/tst-wscanf-binary-c11.c
@@ -0,0 +1,28 @@
+/* Test wscanf functions with C2X binary integers (wide strings,
+   no extensions to C11).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#undef _GNU_SOURCE
+
+#define CHAR wchar_t
+#define FNW w
+#define L_(C) L ## C
+#define TEST_C2X 0
+#define STD "c11"
+
+#include "../stdio-common/tst-scanf-binary-main.c"
diff --git a/wcsmbs/tst-wscanf-binary-c2x.c b/wcsmbs/tst-wscanf-binary-c2x.c
new file mode 100644
index 0000000000..05260b8cfd
--- /dev/null
+++ b/wcsmbs/tst-wscanf-binary-c2x.c
@@ -0,0 +1,31 @@
+/* Test wscanf functions with C2X binary integers (wide strings,
+   no extensions).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Some versions of GCC supported for building glibc do not support
+   -std=c2x.  */
+#undef _GNU_SOURCE
+#define _ISOC2X_SOURCE
+
+#define CHAR wchar_t
+#define FNW w
+#define L_(C) L ## C
+#define TEST_C2X 1
+#define STD "c2x"
+
+#include "../stdio-common/tst-scanf-binary-main.c"
diff --git a/wcsmbs/tst-wscanf-binary-gnu11.c b/wcsmbs/tst-wscanf-binary-gnu11.c
new file mode 100644
index 0000000000..4af479e968
--- /dev/null
+++ b/wcsmbs/tst-wscanf-binary-gnu11.c
@@ -0,0 +1,26 @@
+/* Test wscanf functions with C2X binary integers (wide strings,
+   GNU extensions to C11).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define CHAR wchar_t
+#define FNW w
+#define L_(C) L ## C
+#define TEST_C2X 1
+#define STD "gnu11"
+
+#include "../stdio-common/tst-scanf-binary-main.c"
diff --git a/wcsmbs/tst-wscanf-binary-gnu89.c b/wcsmbs/tst-wscanf-binary-gnu89.c
new file mode 100644
index 0000000000..85226aeef9
--- /dev/null
+++ b/wcsmbs/tst-wscanf-binary-gnu89.c
@@ -0,0 +1,26 @@
+/* Test wscanf functions with C2X binary integers (wide strings,
+   GNU extensions to C89).
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define CHAR wchar_t
+#define FNW w
+#define L_(C) L ## C
+#define TEST_C2X 0
+#define STD "gnu89"
+
+#include "../stdio-common/tst-scanf-binary-main.c"
diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index cde0d32b0a..7ab99ba93b 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -762,9 +762,34 @@ extern int swscanf (const wchar_t *__restrict __s,
    functions are at alternative names.  When __LDBL_COMPAT or
    __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI are in effect, this is handled in
    bits/wchar-ldbl.h.  */
-#if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
+# if !__GLIBC_USE (DEPRECATED_SCANF) && !defined __LDBL_COMPAT \
      && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
-#  ifdef __REDIRECT
+#  if __GLIBC_USE (C2X_STRTOL)
+#   ifdef __REDIRECT
+extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
+				 const wchar_t *__restrict __format, ...),
+		       __isoc23_fwscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
+extern int __REDIRECT (wscanf, (const wchar_t *__restrict __format, ...),
+		       __isoc23_wscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
+extern int __REDIRECT_NTH (swscanf, (const wchar_t *__restrict __s,
+				     const wchar_t *__restrict __format,
+				     ...), __isoc23_swscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
+#   else
+extern int __isoc23_fwscanf (__FILE *__restrict __stream,
+			     const wchar_t *__restrict __format, ...);
+extern int __isoc23_wscanf (const wchar_t *__restrict __format, ...);
+extern int __isoc23_swscanf (const wchar_t *__restrict __s,
+			     const wchar_t *__restrict __format, ...)
+     __THROW;
+#    define fwscanf __isoc23_fwscanf
+#    define wscanf __isoc23_wscanf
+#    define swscanf __isoc23_swscanf
+#   endif
+#  else
+#   ifdef __REDIRECT
 extern int __REDIRECT (fwscanf, (__FILE *__restrict __stream,
 				 const wchar_t *__restrict __format, ...),
 		       __isoc99_fwscanf)
@@ -776,16 +801,17 @@ extern int __REDIRECT_NTH (swscanf, (const wchar_t *__restrict __s,
 				     const wchar_t *__restrict __format,
 				     ...), __isoc99_swscanf)
      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
-#  else
+#   else
 extern int __isoc99_fwscanf (__FILE *__restrict __stream,
 			     const wchar_t *__restrict __format, ...);
 extern int __isoc99_wscanf (const wchar_t *__restrict __format, ...);
 extern int __isoc99_swscanf (const wchar_t *__restrict __s,
 			     const wchar_t *__restrict __format, ...)
      __THROW;
-#   define fwscanf __isoc99_fwscanf
-#   define wscanf __isoc99_wscanf
-#   define swscanf __isoc99_swscanf
+#    define fwscanf __isoc99_fwscanf
+#    define wscanf __isoc99_wscanf
+#    define swscanf __isoc99_swscanf
+#   endif
 #  endif
 # endif
 
@@ -818,7 +844,34 @@ extern int vswscanf (const wchar_t *__restrict __s,
      && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
      && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K) \
      && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
-#  ifdef __REDIRECT
+#  if __GLIBC_USE (C2X_STRTOL)
+#   ifdef __REDIRECT
+extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
+				  const wchar_t *__restrict __format,
+				  __gnuc_va_list __arg), __isoc23_vfwscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
+extern int __REDIRECT (vwscanf, (const wchar_t *__restrict __format,
+				 __gnuc_va_list __arg), __isoc23_vwscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
+extern int __REDIRECT_NTH (vswscanf, (const wchar_t *__restrict __s,
+				      const wchar_t *__restrict __format,
+				      __gnuc_va_list __arg), __isoc23_vswscanf)
+     /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
+#   else
+extern int __isoc23_vfwscanf (__FILE *__restrict __s,
+			      const wchar_t *__restrict __format,
+			      __gnuc_va_list __arg);
+extern int __isoc23_vwscanf (const wchar_t *__restrict __format,
+			     __gnuc_va_list __arg);
+extern int __isoc23_vswscanf (const wchar_t *__restrict __s,
+			      const wchar_t *__restrict __format,
+			      __gnuc_va_list __arg) __THROW;
+#    define vfwscanf __isoc23_vfwscanf
+#    define vwscanf __isoc23_vwscanf
+#    define vswscanf __isoc23_vswscanf
+#   endif
+#  else
+#   ifdef __REDIRECT
 extern int __REDIRECT (vfwscanf, (__FILE *__restrict __s,
 				  const wchar_t *__restrict __format,
 				  __gnuc_va_list __arg), __isoc99_vfwscanf)
@@ -830,7 +883,7 @@ extern int __REDIRECT_NTH (vswscanf, (const wchar_t *__restrict __s,
 				      const wchar_t *__restrict __format,
 				      __gnuc_va_list __arg), __isoc99_vswscanf)
      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
-#  else
+#   else
 extern int __isoc99_vfwscanf (__FILE *__restrict __s,
 			      const wchar_t *__restrict __format,
 			      __gnuc_va_list __arg);
@@ -839,9 +892,10 @@ extern int __isoc99_vwscanf (const wchar_t *__restrict __format,
 extern int __isoc99_vswscanf (const wchar_t *__restrict __s,
 			      const wchar_t *__restrict __format,
 			      __gnuc_va_list __arg) __THROW;
-#   define vfwscanf __isoc99_vfwscanf
-#   define vwscanf __isoc99_vwscanf
-#   define vswscanf __isoc99_vswscanf
+#    define vfwscanf __isoc99_vfwscanf
+#    define vwscanf __isoc99_vwscanf
+#    define vswscanf __isoc99_vswscanf
+#   endif
 #  endif
 # endif