* string/string.h (memchr, strchr, strrchr, strpbrk, strstr, index,

	rindex): For C++ add inlines so that they can be recognized as
	builtins.
	* string/strings.h: Define correct C++ prototypes for gcc 4.4.

2 files changed, 192 insertions, 18 deletions

diff --git a/string/string.h b/string/string.h
index 7f32a9a3d5..849255f75c 100644
--- a/string/string.h
+++ b/string/string.h
@@ -69,10 +69,27 @@ extern int memcmp (__const void *__s1, __const void *__s2, size_t __n)
 
 /* Search N bytes of S for C.  */
 #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" void *memchr (void *__s, int __c, size_t __n)
+extern "C++"
+{
+extern void *memchr (void *__s, int __c, size_t __n)
       __THROW __asm ("memchr") __attribute_pure__ __nonnull ((1));
-extern "C++" __const void *memchr (__const void *__s, int __c, size_t __n)
+extern __const void *memchr (__const void *__s, int __c, size_t __n)
       __THROW __asm ("memchr") __attribute_pure__ __nonnull ((1));
+
+# ifdef __OPTIMIZE__
+__extern_always_inline void *
+memchr (void *__s, int __c, size_t __n) __THROW
+{
+  return __builtin_memchr (__s, __c, __n);
+}
+
+__extern_always_inline __const void *
+memchr (__const void *__s, int __c, size_t __n) __THROW
+{
+  return __builtin_memchr (__s, __c, __n);
+}
+# endif
+}
 #else
 extern void *memchr (__const void *__s, int __c, size_t __n)
       __THROW __attribute_pure__ __nonnull ((1));
@@ -191,20 +208,54 @@ extern char *strndup (__const char *__string, size_t __n)
 __BEGIN_NAMESPACE_STD
 /* Find the first occurrence of C in S.  */
 #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *strchr (char *__s, int __c)
+extern "C++"
+{
+extern char *strchr (char *__s, int __c)
      __THROW __asm ("strchr") __attribute_pure__ __nonnull ((1));
-extern "C++" __const char *strchr (__const char *__s, int __c)
+extern __const char *strchr (__const char *__s, int __c)
      __THROW __asm ("strchr") __attribute_pure__ __nonnull ((1));
+
+# ifdef __OPTIMIZE__
+__extern_always_inline char *
+strchr (char *__s, int __c) __THROW
+{
+  return __builtin_strchr (__s, __c);
+}
+
+__extern_always_inline __const char *
+strchr (__const char *__s, int __c) __THROW
+{
+  return __builtin_strchr (__s, __c);
+}
+# endif
+}
 #else
 extern char *strchr (__const char *__s, int __c)
      __THROW __attribute_pure__ __nonnull ((1));
 #endif
 /* Find the last occurrence of C in S.  */
 #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *strrchr (char *__s, int __c)
+extern "C++"
+{
+extern char *strrchr (char *__s, int __c)
      __THROW __asm ("strrchr") __attribute_pure__ __nonnull ((1));
-extern "C++" __const char *strrchr (__const char *__s, int __c)
+extern __const char *strrchr (__const char *__s, int __c)
      __THROW __asm ("strrchr") __attribute_pure__ __nonnull ((1));
+
+# ifdef __OPTIMIZE__
+__extern_always_inline char *
+strrchr (char *__s, int __c) __THROW
+{
+  return __builtin_strrchr (__s, __c);
+}
+
+__extern_always_inline __const char *
+strrchr (__const char *__s, int __c) __THROW
+{
+  return __builtin_strrchr (__s, __c);
+}
+# endif
+}
 #else
 extern char *strrchr (__const char *__s, int __c)
      __THROW __attribute_pure__ __nonnull ((1));
@@ -236,21 +287,55 @@ extern size_t strspn (__const char *__s, __const char *__accept)
      __THROW __attribute_pure__ __nonnull ((1, 2));
 /* Find the first occurrence in S of any character in ACCEPT.  */
 #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *strpbrk (char *__s, __const char *__accept)
+extern "C++"
+{
+extern char *strpbrk (char *__s, __const char *__accept)
      __THROW __asm ("strpbrk") __attribute_pure__ __nonnull ((1, 2));
-extern "C++" __const char *strpbrk (__const char *__s, __const char *__accept)
+extern __const char *strpbrk (__const char *__s, __const char *__accept)
      __THROW __asm ("strpbrk") __attribute_pure__ __nonnull ((1, 2));
+
+# ifdef __OPTIMIZE__
+__extern_always_inline char *
+strpbrk (char *__s, __const char *__accept) __THROW
+{
+  return __builtin_strpbrk (__s, __accept);
+}
+
+__extern_always_inline __const char *
+strpbrk (__const char *__s, __const char *__accept) __THROW
+{
+  return __builtin_strpbrk (__s, __accept);
+}
+# endif
+}
 #else
 extern char *strpbrk (__const char *__s, __const char *__accept)
      __THROW __attribute_pure__ __nonnull ((1, 2));
 #endif
 /* Find the first occurrence of NEEDLE in HAYSTACK.  */
 #ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *strstr (char *__haystack, __const char *__needle)
+extern "C++"
+{
+extern char *strstr (char *__haystack, __const char *__needle)
      __THROW __asm ("strstr") __attribute_pure__ __nonnull ((1, 2));
-extern "C++" __const char *strstr (__const char *__haystack,
-				   __const char *__needle)
+extern __const char *strstr (__const char *__haystack,
+			     __const char *__needle)
      __THROW __asm ("strstr") __attribute_pure__ __nonnull ((1, 2));
+
+# ifdef __OPTIMIZE__
+__extern_always_inline char *
+strstr (char *__haystack, __const char *__needle) __THROW
+{
+  return __builtin_strstr (__haystack, __needle);
+}
+
+__extern_always_inline __const char *
+strstr (__const char *__haystack, __const char *__needle) __THROW
+{
+  return __builtin_strstr (__haystack, __needle);
+}
+# endif
+}
 #else
 extern char *strstr (__const char *__haystack, __const char *__needle)
      __THROW __attribute_pure__ __nonnull ((1, 2));
@@ -377,10 +462,27 @@ extern int bcmp (__const void *__s1, __const void *__s2, size_t __n)
 
 /* Find the first occurrence of C in S (same as strchr).  */
 # ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *index (char *__s, int __c)
+extern "C++"
+{
+extern char *index (char *__s, int __c)
      __THROW __asm ("index") __attribute_pure__ __nonnull ((1));
-extern "C++" __const char *index (__const char *__s, int __c)
+extern __const char *index (__const char *__s, int __c)
      __THROW __asm ("index") __attribute_pure__ __nonnull ((1));
+
+#  if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRINGS_H_PROTO
+__extern_always_inline char *
+index (char *__s, int __c) __THROW
+{
+  return __builtin_index (__s, __c);
+}
+
+__extern_always_inline __const char *
+index (__const char *__s, int __c) __THROW
+{
+  return __builtin_index (__s, __c);
+}
+#  endif
+}
 # else
 extern char *index (__const char *__s, int __c)
      __THROW __attribute_pure__ __nonnull ((1));
@@ -388,10 +490,27 @@ extern char *index (__const char *__s, int __c)
 
 /* Find the last occurrence of C in S (same as strrchr).  */
 # ifdef __CORRECT_ISO_CPP_STRING_H_PROTO
-extern "C++" char *rindex (char *__s, int __c)
+extern "C++"
+{
+extern char *rindex (char *__s, int __c)
      __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));
-extern "C++" __const char *rindex (__const char *__s, int __c)
+extern __const char *rindex (__const char *__s, int __c)
      __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));
+
+#  if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRINGS_H_PROTO
+__extern_always_inline char *
+rindex (char *__s, int __c) __THROW
+{
+  return __builtin_rindex (__s, __c);
+}
+
+__extern_always_inline __const char *
+rindex (__const char *__s, int __c) __THROW
+{
+  return __builtin_rindex (__s, __c);
+}
+#endif
+}
 # else
 extern char *rindex (__const char *__s, int __c)
      __THROW __attribute_pure__ __nonnull ((1));
diff --git a/string/strings.h b/string/strings.h
index 3ba2b04c8e..0db756ae56 100644
--- a/string/strings.h
+++ b/string/strings.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,92,96,97,99,2000,2001 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,96,97,99,2000,2001,2009 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
@@ -28,6 +28,11 @@
 # define __need_size_t
 # include <stddef.h>
 
+/* Tell the caller that we provide correct C++ prototypes.  */
+# if defined __cplusplus && __GNUC_PREREQ (4, 4)
+#  define __CORRECT_ISO_CPP_STRINGS_H_PROTO
+# endif
+
 __BEGIN_DECLS
 
 /* Compare N bytes of S1 and S2 (same as memcmp).  */
@@ -45,10 +50,60 @@ extern void bzero (void *__s, size_t __n) __THROW;
 extern int ffs (int __i) __THROW __attribute__ ((const));
 
 /* Find the first occurrence of C in S (same as strchr).  */
-extern char *index (__const char *__s, int __c) __THROW __attribute_pure__;
+# ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO
+extern "C++"
+{
+extern char *index (char *__s, int __c)
+     __THROW __asm ("index") __attribute_pure__ __nonnull ((1));
+extern __const char *index (__const char *__s, int __c)
+     __THROW __asm ("index") __attribute_pure__ __nonnull ((1));
+
+#  if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO
+__extern_always_inline char *
+index (char *__s, int __c) __THROW
+{
+  return __builtin_index (__s, __c);
+}
+
+__extern_always_inline __const char *
+index (__const char *__s, int __c) __THROW
+{
+  return __builtin_index (__s, __c);
+}
+#  endif
+}
+# else
+extern char *index (__const char *__s, int __c)
+     __THROW __attribute_pure__ __nonnull ((1));
+# endif
 
 /* Find the last occurrence of C in S (same as strrchr).  */
-extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__;
+# ifdef __CORRECT_ISO_CPP_STRINGS_H_PROTO
+extern "C++"
+{
+extern char *rindex (char *__s, int __c)
+     __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));
+extern __const char *rindex (__const char *__s, int __c)
+     __THROW __asm ("rindex") __attribute_pure__ __nonnull ((1));
+
+#  if defined __OPTIMIZE__ && !defined __CORRECT_ISO_CPP_STRING_H_PROTO
+__extern_always_inline char *
+rindex (char *__s, int __c) __THROW
+{
+  return __builtin_rindex (__s, __c);
+}
+
+__extern_always_inline __const char *
+rindex (__const char *__s, int __c) __THROW
+{
+  return __builtin_rindex (__s, __c);
+}
+#endif
+}
+# else
+extern char *rindex (__const char *__s, int __c)
+     __THROW __attribute_pure__ __nonnull ((1));
+# endif
 
 /* Compare S1 and S2, ignoring case.  */
 extern int strcasecmp (__const char *__s1, __const char *__s2)