gcc/testsuite/gcc.dg/strlenopt.h

/* This is a replacement of needed parts from stdlib.h and string.h
   for -foptimize-strlen testing, to ensure we are testing the builtins
   rather than whatever the OS has in its headers.  */

#define NULL ((void *) 0)
typedef __SIZE_TYPE__ size_t;
extern void abort (void);
void *malloc (size_t);
void free (void *);
char *strdup (const char *);
size_t strlen (const char *);
void *memcpy (void *__restrict, const void *__restrict, size_t);
char *strcpy (char *__restrict, const char *__restrict);
char *strcat (char *__restrict, const char *__restrict);
char *strchr (const char *, int);
void *memset (void *, int, size_t);
int memcmp (const void *, const void *, size_t);
int strcmp (const char *, const char *);
#ifdef USE_GNU
void *mempcpy (void *__restrict, const void *__restrict, size_t);
char *stpcpy (char *__restrict, const char *__restrict);
#endif

#if defined(FORTIFY_SOURCE) && FORTIFY_SOURCE > 0 && __OPTIMIZE__
# define bos(ptr) __builtin_object_size (ptr, FORTIFY_SOURCE > 0)
# define bos0(ptr) __builtin_object_size (ptr, 0)

extern inline __attribute__((gnu_inline, always_inline, artificial)) void *
memcpy (void *__restrict dest, const void *__restrict src, size_t len)
{
  return __builtin___memcpy_chk (dest, src, len, bos0 (dest));
}

extern inline __attribute__((gnu_inline, always_inline, artificial)) char *
strcpy (char *__restrict dest, const char *__restrict src)
{
  return __builtin___strcpy_chk (dest, src, bos (dest));
}

extern inline __attribute__((gnu_inline, always_inline, artificial)) char *
strcat (char *__restrict dest, const char *__restrict src)
{
  return __builtin___strcat_chk (dest, src, bos (dest));
}

# ifdef USE_GNU
extern inline __attribute__((gnu_inline, always_inline, artificial)) void *
mempcpy (void *__restrict dest, const void *__restrict src, size_t len)
{
  return __builtin___mempcpy_chk (dest, src, len, bos0 (dest));
}

extern inline __attribute__((gnu_inline, always_inline, artificial)) char *
stpcpy (char *__restrict dest, const char *__restrict src)
{
  return __builtin___stpcpy_chk (dest, src, bos (dest));
}
# endif
#endif