| /* PR tree-optimization/79220 - missing -Wstringop-overflow= on a memcpy |
| overflow with a small power-of-2 size |
| { dg-do compile } |
| { dg-options "-O2 -Wno-array-bounds -Wstringop-overflow" } */ |
| |
| extern void* memcpy (void*, const void*, __SIZE_TYPE__); |
| extern void* memmove (void*, const void*, __SIZE_TYPE__); |
| extern void* memset (void*, int, __SIZE_TYPE__); |
| |
| char d[1]; |
| |
| void test_memcpy_lit_2 (void) |
| { |
| memcpy (d, "01", 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memcpy_lit_4 (void) |
| { |
| memcpy (d, "0123", 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memmove_lit_8 (void) |
| { |
| memmove (d, "01234567", 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| |
| void test_memcpy_ptr_2 (const void *s) |
| { |
| memcpy (d, s, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memcpy_ptr_4 (const void *s) |
| { |
| memcpy (d, s, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memcpy_ptr_8 (const void *s) |
| { |
| memcpy (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| |
| void test_memmove_ptr (const void *s) |
| { |
| memmove (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memset_2 (void) |
| { |
| memset (d, 0, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memset_4 (void) |
| { |
| memset (d, 0, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |
| |
| void test_memset_8 (void) |
| { |
| memset (d, 0, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */ |
| } |