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-rw-r--r--string/bits/string3.h158
1 files changed, 126 insertions, 32 deletions
diff --git a/string/bits/string3.h b/string/bits/string3.h
index f68ce5899f..876fe77929 100644
--- a/string/bits/string3.h
+++ b/string/bits/string3.h
@@ -20,27 +20,40 @@
# error "Never use <bits/string3.h> directly; include <string.h> instead."
#endif
+__warndecl (__warn_memset_zero_len,
+ "memset used with constant zero length parameter; this could be due to transposed parameters");
+
+#ifndef __cplusplus
/* XXX This is temporarily. We should not redefine any of the symbols
and instead integrate the error checking into the original
definitions. */
-#undef memcpy
-#undef memmove
-#undef memset
-#undef strcat
-#undef strcpy
-#undef strncat
-#undef strncpy
-#ifdef __USE_GNU
-# undef mempcpy
-# undef stpcpy
-#endif
-#ifdef __USE_BSD
-# undef bcopy
-# undef bzero
+# undef memcpy
+# undef memmove
+# undef memset
+# undef strcat
+# undef strcpy
+# undef strncat
+# undef strncpy
+# ifdef __USE_GNU
+# undef mempcpy
+# undef stpcpy
+# endif
+# ifdef __USE_BSD
+# undef bcopy
+# undef bzero
+# endif
#endif
-#define memcpy(dest, src, len) \
+#ifdef __cplusplus
+__extern_always_inline void *
+__NTH (memcpy (void *__restrict __dest, __const void *__restrict __src,
+ size_t __len))
+{
+ return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
+}
+#else
+# define memcpy(dest, src, len) \
((__bos0 (dest) != (size_t) -1) \
? __builtin___memcpy_chk (dest, src, len, __bos0 (dest)) \
: __memcpy_ichk (dest, src, len))
@@ -50,9 +63,17 @@ __NTH (__memcpy_ichk (void *__restrict __dest, __const void *__restrict __src,
{
return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
}
+#endif
-
-#define memmove(dest, src, len) \
+#ifdef __cplusplus
+__extern_always_inline void *
+__NTH (memmove (void *__restrict __dest, __const void *__restrict __src,
+ size_t __len))
+{
+ return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
+}
+#else
+# define memmove(dest, src, len) \
((__bos0 (dest) != (size_t) -1) \
? __builtin___memmove_chk (dest, src, len, __bos0 (dest)) \
: __memmove_ichk (dest, src, len))
@@ -61,10 +82,18 @@ __NTH (__memmove_ichk (void *__dest, __const void *__src, size_t __len))
{
return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
}
-
+#endif
#ifdef __USE_GNU
-# define mempcpy(dest, src, len) \
+# ifdef __cplusplus
+__extern_always_inline void *
+__NTH (mempcpy (void *__restrict __dest, __const void *__restrict __src,
+ size_t __len))
+{
+ return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
+}
+# else
+# define mempcpy(dest, src, len) \
((__bos0 (dest) != (size_t) -1) \
? __builtin___mempcpy_chk (dest, src, len, __bos0 (dest)) \
: __mempcpy_ichk (dest, src, len))
@@ -74,6 +103,7 @@ __NTH (__mempcpy_ichk (void *__restrict __dest,
{
return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
}
+# endif
#endif
@@ -82,9 +112,19 @@ __NTH (__mempcpy_ichk (void *__restrict __dest,
especially problematic if the intended fill value is zero. In this
case no work is done at all. We detect these problems by referring
non-existing functions. */
-__warndecl (__warn_memset_zero_len,
- "memset used with constant zero length parameter; this could be due to transposed parameters");
-#define memset(dest, ch, len) \
+#ifdef __cplusplus
+__extern_always_inline void *
+__NTH (memset (void *__dest, int __ch, size_t __len))
+{
+ if (__builtin_constant_p (__len) && __len == 0)
+ {
+ __warn_memset_zero_len ();
+ return __dest;
+ }
+ return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
+}
+#else
+# define memset(dest, ch, len) \
(__builtin_constant_p (len) && (len) == 0 \
? (__warn_memset_zero_len (), (void) (ch), (void) (len), (void *) (dest)) \
: ((__bos0 (dest) != (size_t) -1) \
@@ -95,20 +135,41 @@ __NTH (__memset_ichk (void *__dest, int __ch, size_t __len))
{
return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
}
+#endif
#ifdef __USE_BSD
-# define bcopy(src, dest, len) ((void) \
+# ifdef __cplusplus
+__extern_always_inline void
+__NTH (bcopy (__const void *__restrict __src, void *__restrict __dest,
+ size_t __len))
+{
+ __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
+}
+__extern_always_inline void
+__NTH (bzero (void *__dest, size_t __len))
+{
+ __builtin___memset_chk (__dest, '\0', __len, __bos0 (__dest));
+}
+# else
+# define bcopy(src, dest, len) ((void) \
((__bos0 (dest) != (size_t) -1) \
? __builtin___memmove_chk (dest, src, len, __bos0 (dest)) \
: __memmove_ichk (dest, src, len)))
-# define bzero(dest, len) ((void) \
+# define bzero(dest, len) ((void) \
((__bos0 (dest) != (size_t) -1) \
? __builtin___memset_chk (dest, '\0', len, __bos0 (dest)) \
: __memset_ichk (dest, '\0', len)))
+# endif
#endif
-
-#define strcpy(dest, src) \
+#ifdef __cplusplus
+__extern_always_inline char *
+__NTH (strcpy (char *__restrict __dest, __const char *__restrict __src))
+{
+ return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
+}
+#else
+# define strcpy(dest, src) \
((__bos (dest) != (size_t) -1) \
? __builtin___strcpy_chk (dest, src, __bos (dest)) \
: __strcpy_ichk (dest, src))
@@ -117,10 +178,17 @@ __NTH (__strcpy_ichk (char *__restrict __dest, __const char *__restrict __src))
{
return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
}
-
+#endif
#ifdef __USE_GNU
-# define stpcpy(dest, src) \
+# ifdef __cplusplus
+__extern_always_inline char *
+__NTH (stpcpy (char *__restrict __dest, __const char *__restrict __src))
+{
+ return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
+}
+# else
+# define stpcpy(dest, src) \
((__bos (dest) != (size_t) -1) \
? __builtin___stpcpy_chk (dest, src, __bos (dest)) \
: __stpcpy_ichk (dest, src))
@@ -129,10 +197,19 @@ __NTH (__stpcpy_ichk (char *__restrict __dest, __const char *__restrict __src))
{
return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
}
+# endif
#endif
-#define strncpy(dest, src, len) \
+#ifdef __cplusplus
+__extern_always_inline char *
+__NTH (strncpy (char *__restrict __dest, __const char *__restrict __src,
+ size_t __len))
+{
+ return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
+}
+#else
+# define strncpy(dest, src, len) \
((__bos (dest) != (size_t) -1) \
? __builtin___strncpy_chk (dest, src, len, __bos (dest)) \
: __strncpy_ichk (dest, src, len))
@@ -142,7 +219,7 @@ __NTH (__strncpy_ichk (char *__restrict __dest, __const char *__restrict __src,
{
return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
}
-
+#endif
// XXX We have no corresponding builtin yet.
extern char *__stpncpy_chk (char *__dest, __const char *__src, size_t __n,
@@ -161,7 +238,14 @@ __NTH (stpncpy (char *__dest, __const char *__src, size_t __n))
}
-#define strcat(dest, src) \
+#ifdef __cplusplus
+__extern_always_inline char *
+__NTH (strcat (char *__restrict __dest, __const char *__restrict __src))
+{
+ return __builtin___strcat_chk (__dest, __src, __bos (__dest));
+}
+#else
+# define strcat(dest, src) \
((__bos (dest) != (size_t) -1) \
? __builtin___strcat_chk (dest, src, __bos (dest)) \
: __strcat_ichk (dest, src))
@@ -170,9 +254,18 @@ __NTH (__strcat_ichk (char *__restrict __dest, __const char *__restrict __src))
{
return __builtin___strcat_chk (__dest, __src, __bos (__dest));
}
+#endif
-#define strncat(dest, src, len) \
+#ifdef __cplusplus
+__extern_always_inline char *
+__NTH (strncat (char *__restrict __dest, __const char *__restrict __src,
+ size_t __len))
+{
+ return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
+}
+#else
+# define strncat(dest, src, len) \
((__bos (dest) != (size_t) -1) \
? __builtin___strncat_chk (dest, src, len, __bos (dest)) \
: __strncat_ichk (dest, src, len))
@@ -182,3 +275,4 @@ __NTH (__strncat_ichk (char *__restrict __dest, __const char *__restrict __src,
{
return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
}
+#endif