https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112677
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
Keywords|needs-bisection |ice-on-valid-code
Summary|ASAN reports |[14 Regression] ASAN
|stack-buffer-overflow in |reports
|tree-vect-loop.cc |stack-buffer-overflow in
|vect_is_simple_use when |tree-vect-loop.cc
|compiling with -mavx512 |vect_is_simple_use when
| |compiling with -mavx512
CC| |rdapp at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Last reconfirmed| |2023-11-23
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
We are processing:
_ifc__35 = .COND_IOR (_23, mask_25, _18, mask_25);
Which has 4 operations but vectype_op is only declared for 3:
```
tree vectype_op[3] = { NULL_TREE, NULL_TREE, NULL_TREE };
```
And it is accessed by:
```
for (i = 0; i < (int) op.num_ops; i++)
{
/* The condition of COND_EXPR is checked in vectorizable_condition(). */
if (i == 0 && op.code == COND_EXPR)
continue;
stmt_vec_info def_stmt_info;
enum vect_def_type dt;
if (!vect_is_simple_use (loop_vinfo, stmt_info, slp_for_stmt_info,
i + opno_adjust, &op.ops[i], &slp_op[i], &dt,
&vectype_op[i], &def_stmt_info))
```
We definitely should increase it to at least 4 but I am not sure if it needs to
increased more.
