gcc/testsuite/gcc.c-torture/execute/builtins/chk.h

   1 #ifndef os
   2 # define os(ptr) __builtin_object_size (ptr, 0)
   3 #endif
   4
   5 /* This is one of the alternatives for object size checking.
   6    If dst has side-effects, size checking will never be done.  */
   7 #undef memcpy
   8 #define memcpy(dst, src, len) \
   9   __builtin___memcpy_chk (dst, src, len, os (dst))
  10 #undef mempcpy
  11 #define mempcpy(dst, src, len) \
  12   __builtin___mempcpy_chk (dst, src, len, os (dst))
  13 #undef memmove
  14 #define memmove(dst, src, len) \
  15   __builtin___memmove_chk (dst, src, len, os (dst))
  16 #undef memset
  17 #define memset(dst, val, len) \
  18   __builtin___memset_chk (dst, val, len, os (dst))
  19 #undef strcpy
  20 #define strcpy(dst, src) \
  21   __builtin___strcpy_chk (dst, src, os (dst))
  22 #undef stpcpy
  23 #define stpcpy(dst, src) \
  24   __builtin___stpcpy_chk (dst, src, os (dst))
  25 #undef strcat
  26 #define strcat(dst, src) \
  27   __builtin___strcat_chk (dst, src, os (dst))
  28 #undef strncpy
  29 #define strncpy(dst, src, len) \
  30   __builtin___strncpy_chk (dst, src, len, os (dst))
  31 #undef stpncpy
  32 #define stpncpy(dst, src, len) \
  33   __builtin___stpncpy_chk (dst, src, len, os (dst))
  34 #undef strncat
  35 #define strncat(dst, src, len) \
  36   __builtin___strncat_chk (dst, src, len, os (dst))
  37 #undef sprintf
  38 #define sprintf(dst, ...) \
  39   __builtin___sprintf_chk (dst, 0, os (dst), __VA_ARGS__)
  40 #undef vsprintf
  41 #define vsprintf(dst, fmt, ap) \
  42   __builtin___vsprintf_chk (dst, 0, os (dst), fmt, ap)
  43 #undef snprintf
  44 #define snprintf(dst, len, ...) \
  45   __builtin___snprintf_chk (dst, len, 0, os (dst), __VA_ARGS__)
  46 #undef vsnprintf
  47 #define vsnprintf(dst, len, fmt, ap) \
  48   __builtin___vsnprintf_chk (dst, len, 0, os (dst), fmt, ap)
  49
  50 /* Now "redefine" even builtins for the purpose of testing.  */
  51 #undef __builtin_memcpy
  52 #define __builtin_memcpy(dst, src, len) memcpy (dst, src, len)
  53 #undef __builtin_mempcpy
  54 #define __builtin_mempcpy(dst, src, len) mempcpy (dst, src, len)
  55 #undef __builtin_memmove
  56 #define __builtin_memmove(dst, src, len) memmove (dst, src, len)
  57 #undef __builtin_memset
  58 #define __builtin_memset(dst, val, len) memset (dst, val, len)
  59 #undef __builtin_strcpy
  60 #define __builtin_strcpy(dst, src) strcpy (dst, src)
  61 #undef __builtin_stpcpy
  62 #define __builtin_stpcpy(dst, src) stpcpy (dst, src)
  63 #undef __builtin_strcat
  64 #define __builtin_strcat(dst, src) strcat (dst, src)
  65 #undef __builtin_strncpy
  66 #define __builtin_strncpy(dst, src, len) strncpy (dst, src, len)
  67 #undef __builtin_strncat
  68 #define __builtin_strncat(dst, src, len) strncat (dst, src, len)
  69 #undef __builtin_sprintf
  70 #define __builtin_sprintf(dst, ...) sprintf (dst, __VA_ARGS__)
  71 #undef __builtin_vsprintf
  72 #define __builtin_vsprintf(dst, fmt, ap) vsprintf (dst, fmt, ap)
  73 #undef __builtin_snprintf
  74 #define __builtin_snprintf(dst, len, ...) snprintf (dst, len, __VA_ARGS__)
  75 #undef __builtin_vsnprintf
  76 #define __builtin_vsnprintf(dst, len, fmt, ap) vsnprintf (dst, len, fmt, ap)
  77
  78 extern void *chk_fail_buf[];
  79 extern volatile int chk_fail_allowed, chk_calls;
  80 extern volatile int memcpy_disallowed, mempcpy_disallowed, memmove_disallowed;
  81 extern volatile int memset_disallowed, strcpy_disallowed, stpcpy_disallowed;
  82 extern volatile int strncpy_disallowed, stpncpy_disallowed, strcat_disallowed;
  83 extern volatile int strncat_disallowed, sprintf_disallowed, vsprintf_disallowed;
  84 extern volatile int snprintf_disallowed, vsnprintf_disallowed;
  85
  86 /* A storage class that ensures that declarations bind locally.  We want
  87    to test non-static declarations where we know it is safe to do so.  */
  88 #if __PIC__ && !__PIE__
  89 #define LOCAL static
  90 #else
  91 #define LOCAL
  92 #endif