https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90394
Bug ID: 90394
Summary: [10 Regression] ICE in is_value_included_in, at
tree-ssa-uninit.c:1055
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-10.0.0-alpha20190505 snapshot (r270883) ICEs when compiling the following
testcase w/ -O1 -fno-tree-fre -Wuninitialized:
int pz;
unsigned int zi;
void
uk (void)
{
int th = 1;
int *gw = &zi;
for (zi = 0; zi < 2; ++zi)
{
int a2 = 0;
for (zi = 0; zi < 1; ++zi)
{
th = a2 * 2;
og:
for (pz = 0; pz < 1; ++pz)
{
}
}
pz = !!*gw ? *gw : pz;
pz = (!!th ? (pz & 1) : 0);
if (pz == 0)
++a2;
}
goto og;
}
% gcc-10.0.0-alpha20190505 -O1 -fno-tree-fre -Wuninitialized -c lzuj3nav.c
during GIMPLE pass: uninit
lzuj3nav.c: In function 'uk':
lzuj3nav.c:5:1: internal compiler error: in is_value_included_in, at
tree-ssa-uninit.c:1055
5 | uk (void)
| ^~
0x6dbc8d is_value_included_in
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1055
0x6dbc8d is_value_included_in
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1017
0xf12e1c is_pred_expr_subset_of
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1494
0xf12e1c is_pred_chain_subset_of
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1527
0xf12e1c is_included_in
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1556
0xf12e1c is_superset_of
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:1587
0xf12e1c is_use_properly_guarded
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:2490
0xf13dba find_uninit_use
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:2534
0xf13dba warn_uninitialized_phi
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:2603
0xf13dba execute
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20190505/work/gcc-10-20190505/gcc/tree-ssa-uninit.c:2712
