https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117333
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-10-29
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
tree tree_size_b = TYPE_SIZE_UNIT (TREE_TYPE (DR_REF (b)));
(gdb) p tree_size_b
$2 = <tree 0x0>
(gdb) p debug_gimple_stmt ($4)
# .MEM_8 = VDEF <.MEM_7>
ps_4(D)->ac = "abcdef";
where the LHS is
<component_ref 0x7ffff69da780
type <array_type 0x7ffff69b2690
type <integer_type 0x7ffff68223f0 char public QI
type <integer_type 0x7ffff68223f0 char public QI
size <integer_cst 0x7ffff6824048 constant 8>
unit-size <integer_cst 0x7ffff6824060 constant 1>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff68223f0 precision:8 min <integer_cst 0x7ffff6824090 -128> max
<integer_cst 0x7ffff68240c0 127>
pointer_to_this <pointer_type 0x7ffff682de70>>
BLK
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff69b2690
domain <integer_type 0x7ffff69b25e8 type <integer_type 0x7ffff6822000
sizetype>
DI
size <integer_cst 0x7ffff6802f48 constant 64>
unit-size <integer_cst 0x7ffff6802f60 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff69b25e8 precision:64 min <integer_cst 0x7ffff6802f78 0>>>
where this stmt is from the
*ps = (struct s) gs;
gimplification:
*ps = {};
ps->ul = 3;
ps->i = -4;
ps->ac = "abcdef";
while it's reasonably easy to fend off the ICE the IL we have here is
unfortunate. The size of the access comes from the RHS in this case.
