Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 156 insertions, 0 deletions

diff --git a/REORG.TODO/string/bits/string3.h b/REORG.TODO/string/bits/string3.h
new file mode 100644
index 0000000000..738226d49b
--- /dev/null
+++ b/REORG.TODO/string/bits/string3.h
@@ -0,0 +1,156 @@
+/* Copyright (C) 2004-2017 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
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _STRING_H
+# error "Never use <bits/string3.h> directly; include <string.h> instead."
+#endif
+
+#if !__GNUC_PREREQ (5,0)
+__warndecl (__warn_memset_zero_len,
+	    "memset used with constant zero length parameter; this could be due to transposed parameters");
+#endif
+
+#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_MISC
+#  undef bcopy
+#  undef bzero
+# endif
+#endif
+
+
+__fortify_function void *
+__NTH (memcpy (void *__restrict __dest, const void *__restrict __src,
+	       size_t __len))
+{
+  return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
+}
+
+__fortify_function void *
+__NTH (memmove (void *__dest, const void *__src, size_t __len))
+{
+  return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
+}
+
+#ifdef __USE_GNU
+__fortify_function void *
+__NTH (mempcpy (void *__restrict __dest, const void *__restrict __src,
+		size_t __len))
+{
+  return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
+}
+#endif
+
+
+/* The first two tests here help to catch a somewhat common problem
+   where the second and third parameter are transposed.  This is
+   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.  */
+__fortify_function void *
+__NTH (memset (void *__dest, int __ch, size_t __len))
+{
+  /* GCC-5.0 and newer implements these checks in the compiler, so we don't
+     need them here.  */
+#if !__GNUC_PREREQ (5,0)
+  if (__builtin_constant_p (__len) && __len == 0
+      && (!__builtin_constant_p (__ch) || __ch != 0))
+    {
+      __warn_memset_zero_len ();
+      return __dest;
+    }
+#endif
+  return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
+}
+
+#ifdef __USE_MISC
+# include <bits/strings_fortified.h>
+
+void __explicit_bzero_chk (void *__dest, size_t __len, size_t __destlen)
+  __THROW __nonnull ((1));
+
+__fortify_function void
+__NTH (explicit_bzero (void *__dest, size_t __len))
+{
+  __explicit_bzero_chk (__dest, __len, __bos0 (__dest));
+}
+#endif
+
+__fortify_function char *
+__NTH (strcpy (char *__restrict __dest, const char *__restrict __src))
+{
+  return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
+}
+
+#ifdef __USE_GNU
+__fortify_function char *
+__NTH (stpcpy (char *__restrict __dest, const char *__restrict __src))
+{
+  return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
+}
+#endif
+
+
+__fortify_function char *
+__NTH (strncpy (char *__restrict __dest, const char *__restrict __src,
+		size_t __len))
+{
+  return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
+}
+
+/* XXX We have no corresponding builtin yet.  */
+extern char *__stpncpy_chk (char *__dest, const char *__src, size_t __n,
+			    size_t __destlen) __THROW;
+extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest, const char *__src,
+					       size_t __n), stpncpy);
+
+__fortify_function char *
+__NTH (stpncpy (char *__dest, const char *__src, size_t __n))
+{
+  if (__bos (__dest) != (size_t) -1
+      && (!__builtin_constant_p (__n) || __n > __bos (__dest)))
+    return __stpncpy_chk (__dest, __src, __n, __bos (__dest));
+  return __stpncpy_alias (__dest, __src, __n);
+}
+
+
+__fortify_function char *
+__NTH (strcat (char *__restrict __dest, const char *__restrict __src))
+{
+  return __builtin___strcat_chk (__dest, __src, __bos (__dest));
+}
+
+
+__fortify_function char *
+__NTH (strncat (char *__restrict __dest, const char *__restrict __src,
+		size_t __len))
+{
+  return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
+}