https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91236
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
I've got it:
/* We support up to 512-bit values (for V8DFmode). */
unsigned char buffer[64];
int len;
while (!partial_defs.is_empty ())
{
pd_data pd = partial_defs.pop ();
if (TREE_CODE (pd.rhs) == CONSTRUCTOR)
+ {
+ size_t x = MIN ((HOST_WIDE_INT)sizeof (buffer), pd.size);
+ size_t offset = MAX (0, pd.offset);
+ fprintf (stderr, "memset: %ld, offset: %ld\n", x, offset);
/* Empty CONSTRUCTOR. */
memset (buffer + MAX (0, pd.offset),
- 0, MIN ((HOST_WIDE_INT)sizeof (buffer), pd.size));
+ 0, x);
+ }
$ ./gcc/xgcc -Bgcc /tmp/ice.ii -c -O3
memset: 64, offset: 8
during GIMPLE pass: fre
...
So a nice example of stack corruption. Richi can you please prepare a patch for
it?
