Viewing file:  builtin-memcpy.c (1.12 KB) -rw-r--r--
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/* PR tree-optimization/88800 - Spurious -Werror=array-bounds for non-taken
branch
Verify that out-of-bounds memcpy calls are not folded when warnings are
enabled (builtin-memcpy-2.c verifies they're not folded with warnings
disabled).
{ dg-do compile }
{ dg-options "-O2 -Wall -fdump-tree-optimized" } */
extern void* memcpy (void*, const void*, __SIZE_TYPE__);
char a1[1], a2[2], a4[4], a8[8], a16[16], a32[32];
void f1 (const void *p)
{
memcpy (a1, p, sizeof a1 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
void f2 (const void *p)
{
memcpy (a2, p, sizeof a2 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
void f4 (const void *p)
{
memcpy (a4, p, sizeof a4 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
void f8 (const void *p)
{
memcpy (a8, p, sizeof a8 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
void f16 (const void *p)
{
memcpy (a16, p, sizeof a16 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
void f32 (const void *p)
{
memcpy (a32, p, sizeof a32 * 2); /* { dg-warning "\\\[-Warray-bounds" } */
}
/* { dg-final { scan-tree-dump-times "memcpy" 6 "optimized" } } */
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