https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96644
Bug ID: 96644
Summary: [11 Regression] ICE in
get_region_for_unexpected_tree_code, at
analyzer/region-model-manager.cc:930
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-11.0.0-alpha20200816 snapshot (g:c99116aeeb9644ebddec653ee8b19de4d38b65bd)
ICEs when compiling the following testcase w/ -O1 -fanalyzer:
int oh[1];
int *x3;
int *
cm (char *m0)
{
return oh;
}
void
ek (void)
{
for (;;)
{
char *b2 = 0;
if (*b2 != 0)
++b2;
x3 = cm (b2);
}
}
% gcc-11.0.0 -O1 -fanalyzer -c kwnoqaib.c
during IPA pass: analyzer
kwnoqaib.c: In function 'cm':
kwnoqaib.c:7:10: internal compiler error: in
get_region_for_unexpected_tree_code, at analyzer/region-model-manager.cc:930
7 | return oh;
| ^~
0x7221bf
ana::region_model_manager::get_region_for_unexpected_tree_code(ana::region_model_context*,
tree_node*, dump_location_t const&)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model-manager.cc:930
0x110e6bb ana::region_model::get_lvalue_1(ana::path_var,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model.cc:960
0x110eaa8 ana::region_model::get_lvalue(ana::path_var,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model.cc:1055
0x110eaa8 ana::region_model::get_lvalue(tree_node*, ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model.cc:1066
0x110eb5a ana::region_model::on_return(greturn const*,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model.cc:831
0x10ef3de ana::exploded_path::feasible_p(ana::logger*,
ana::feasibility_problem**, ana::engine*, ana::exploded_graph const*) const
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:2940
0x185077c ana::dedupe_winners::add(ana::logger*, shortest_paths<ana::eg_traits,
ana::exploded_path> const&, ana::exploded_graph const*, ana::saved_diagnostic*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/diagnostic-manager.cc:381
0x184e70f ana::diagnostic_manager::emit_saved_diagnostics(ana::exploded_graph
const&)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/diagnostic-manager.cc:518
0x10f6eb4 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:4121
0x10f7aac ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:4175
0x10ec468 execute
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/analyzer-pass.cc:84
