https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93947
Bug ID: 93947
Summary: ICE: Segmentation fault (in
symtab_node::ultimate_alias_target)
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-10.0.1-alpha20200223 snapshot (g:3133bed5d0327e8a9cd0a601b7ecdb9de4fc825d)
ICEs when compiling the following testcase, reduced from
gcc/testsuite/gcc.target/arm/thumb1-ual-1.c, w/ -O1 -fanalyzer:
struct pf {
unsigned int iu : 2;
};
enum {
qr, jv, vm, mz,
};
int uh;
void
w9 (struct pf *x2)
{
switch (x2->iu)
{
case qr:
case jv:
case vm:
uh = 0;
break;
case mz:
break;
default:
__builtin_abort ();
}
}
% gcc-10.0.1 -O1 -fanalyzer -c tsdnvtnl.c
during IPA pass: analyzer
tsdnvtnl.c: In function 'w9':
tsdnvtnl.c:25:5: internal compiler error: Segmentation fault
25 | default:
| ^~~~~~~
0xd8ba2f crash_signal
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/toplev.c:328
0x110d1c1 symtab_node::ultimate_alias_target(availability*, symtab_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/cgraph.h:3242
0x110d1c1 cgraph_node::ultimate_alias_target(availability*, symtab_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/cgraph.h:3263
0x110d1c1 ana::region_model::get_fndecl_for_call(gcall const*,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:6713
0x11113fb ana::region_model::on_call_pre(gcall const*,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/region-model.cc:4175
0x10eab58 ana::exploded_node::on_stmt(ana::exploded_graph&, ana::supernode
const*, gimple const*, ana::program_state*, ana::state_change*) const
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:1068
0x10eb0e1 ana::exploded_graph::process_node(ana::exploded_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:2492
0x10eb5ca ana::exploded_graph::process_worklist()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:2310
0x10ebcf9 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:3670
0x10ec79c ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/engine.cc:3727
0x10e1ef8 execute
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200223/work/gcc-10-20200223/gcc/analyzer/analyzer-pass.cc:84
