Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/gcc.dg/Wstringop-overflow-8.c @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | |
| children |
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| 131:84e7813d76e9 | 145:1830386684a0 |
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| 1 /* PR tree-optimization/79220 - missing -Wstringop-overflow= on a memcpy | |
| 2 overflow with a small power-of-2 size | |
| 3 { dg-do compile } | |
| 4 { dg-options "-O2 -Wno-array-bounds -Wstringop-overflow" } */ | |
| 5 | |
| 6 extern void* memcpy (void*, const void*, __SIZE_TYPE__); | |
| 7 extern void* memmove (void*, const void*, __SIZE_TYPE__); | |
| 8 extern void* memset (void*, int, __SIZE_TYPE__); | |
| 9 | |
| 10 char d[1]; | |
| 11 | |
| 12 void test_memcpy_lit_2 (void) | |
| 13 { | |
| 14 memcpy (d, "01", 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 15 } | |
| 16 | |
| 17 void test_memcpy_lit_4 (void) | |
| 18 { | |
| 19 memcpy (d, "0123", 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 20 } | |
| 21 | |
| 22 void test_memmove_lit_8 (void) | |
| 23 { | |
| 24 memmove (d, "01234567", 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 25 } | |
| 26 | |
| 27 | |
| 28 void test_memcpy_ptr_2 (const void *s) | |
| 29 { | |
| 30 memcpy (d, s, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 31 } | |
| 32 | |
| 33 void test_memcpy_ptr_4 (const void *s) | |
| 34 { | |
| 35 memcpy (d, s, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 36 } | |
| 37 | |
| 38 void test_memcpy_ptr_8 (const void *s) | |
| 39 { | |
| 40 memcpy (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 41 } | |
| 42 | |
| 43 | |
| 44 void test_memmove_ptr (const void *s) | |
| 45 { | |
| 46 memmove (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 47 } | |
| 48 | |
| 49 void test_memset_2 (void) | |
| 50 { | |
| 51 memset (d, 0, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 52 } | |
| 53 | |
| 54 void test_memset_4 (void) | |
| 55 { | |
| 56 memset (d, 0, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 57 } | |
| 58 | |
| 59 void test_memset_8 (void) | |
| 60 { | |
| 61 memset (d, 0, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ | |
| 62 } |