Viewing file:  Wstringop-overflow-8.c (1.51 KB) -rw-r--r--
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/* 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" } */
}
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