| /* { dg-lto-do link } */ |
| /* { dg-lto-options { { -flto -O2 -Werror } } } */ |
| |
| typedef __SIZE_TYPE__ size_t; |
| typedef struct _IO_FILE FILE; |
| |
| #define STRING1(a) #a |
| #define STRING2(a) STRING1(a) |
| |
| extern size_t fread (void *__restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE *__restrict __stream) __asm__ (STRING2(__USER_LABEL_PREFIX__) "fread") __attribute__ ((__warn_unused_result__)); |
| extern size_t fread_warn (void *__restrict __ptr, size_t __ptrlen, size_t __size, size_t __n, FILE *__restrict __stream) __asm__ (STRING2(__USER_LABEL_PREFIX__) "fread") __attribute__ ((__warn_unused_result__)) __attribute__((__warning__ ("fread called with bigger size * nmemb than length " "of destination buffer"))); |
| |
| extern __inline __attribute__ ((__always_inline__)) __attribute__ ((__gnu_inline__)) __attribute__ ((__artificial__)) __attribute__ ((__warn_unused_result__)) |
| size_t |
| local_fread (void *__restrict __ptr, size_t __size, size_t __n, |
| FILE *__restrict __stream) |
| { |
| if (__builtin_object_size (__ptr, 0) != (size_t) -1) |
| { |
| if (!__builtin_constant_p (__size) |
| || !__builtin_constant_p (__n) |
| || (__size | __n) >= (((size_t) 1) << (8 * sizeof (size_t) / 2))) |
| return fread (__ptr, __builtin_object_size (__ptr, 0), __size, __n, __stream); |
| if (__size * __n > __builtin_object_size (__ptr, 0)) |
| return fread_warn (__ptr, __builtin_object_size (__ptr, 0), __size, __n, __stream); |
| } |
| } |
| |
| volatile size_t nmemb; |
| FILE *fp; |
| int main () |
| { |
| char file_contents[4096]; |
| /* We shouldn't get this resolved to a call to fread_warn. */ |
| return local_fread (file_contents, 1, nmemb, fp); |
| } |