https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93661
Bug ID: 93661
Summary: [10 Regression] ICE in tree_to_poly_int64, at
tree.c:2976
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Changed between 20190630 and 20190728 :
$ cat z1.c
int f ()
{
unsigned x = 0xffffffff;
__builtin_memset (1+(char *) &x, 0, -1);
return (x != 0xf0000000);
}
$ gcc-10-20200209 -c z1.c -O2
during GIMPLE pass: fre
z1.c: In function 'f':
z1.c:6:1: internal compiler error: in tree_to_poly_int64, at tree.c:2976
6 | }
| ^
0xfd0a42 tree_to_poly_int64(tree_node const*)
../../gcc/tree.c:2976
0xecb460 vn_reference_lookup_3
../../gcc/tree-ssa-sccvn.c:2507
0xdf6910 walk_non_aliased_vuses(ao_ref*, tree_node*, bool, void* (*)(ao_ref*,
tree_node*, void*), void* (*)(ao_ref*, tree_node*, void*, translate_flags*),
tree_node* (*)(tree_node*), unsigned int&, void*)
../../gcc/tree-ssa-alias.c:3568
0xec235e vn_reference_lookup(tree_node*, tree_node*, vn_lookup_kind,
vn_reference_s**, bool, tree_node**)
../../gcc/tree-ssa-sccvn.c:3225
0xecd452 visit_reference_op_load
../../gcc/tree-ssa-sccvn.c:4547
0xecd452 visit_stmt
../../gcc/tree-ssa-sccvn.c:4964
0xecea9b process_bb
../../gcc/tree-ssa-sccvn.c:6633
0xed0c80 do_rpo_vn
../../gcc/tree-ssa-sccvn.c:7152
0xed168f execute
../../gcc/tree-ssa-sccvn.c:7420
