Viewing file:  fold-stringops-2.c (1.25 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* { dg-do compile } */
/* { dg-options "-O2" } */
typedef __SIZE_TYPE__ size_t;
#define bos(__d) __builtin_object_size ((__d), 0)
char *
safe1 (const char *src, int cond, size_t len)
{
char *dst;
if (cond)
dst = __builtin_malloc (1024);
else
dst = __builtin_malloc (2048);
len = len > 2048 ? 2048 : len;
return __builtin___memcpy_chk (dst, src, len, bos (dst));
}
char *
safe2 (const char *src, int cond, unsigned char len)
{
char *dst;
if (cond)
dst = __builtin_malloc (1024);
else
dst = __builtin_malloc (2048);
return __builtin___strncpy_chk (dst, src, len, bos (dst));
}
int
safe3 (const char *src, int cond, unsigned char len)
{
char *dst;
if (cond)
dst = __builtin_malloc (1024);
else
dst = __builtin_malloc (2048);
return __builtin___snprintf_chk (dst, len, 0, bos (dst), "%s", src);
}
char dst[1024];
void
safe4 (size_t len)
{
len = len > sizeof (dst) - 1 ? sizeof (dst) - 1 : len;
len = len < sizeof (dst) / 2 ? sizeof (dst) / 2 : len;
__builtin_strncat (dst, "hello", len);
}
/* { dg-final { scan-assembler-not "__memcpy_chk" } } */
/* { dg-final { scan-assembler-not "__strncpy_chk" } } */
/* { dg-final { scan-assembler-not "__snprintf_chk" } } */
/* { dg-final { scan-assembler-not "strncat" } } */
|
