https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104417
Bug ID: 104417
Summary: [12 Regression] ICE in check_dynamic_size_for_taint,
at analyzer/sm-taint.cc:1058
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: analyzer
Assignee: dmalcolm at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc 12.0.1 20220206 snapshot (g:8eb329e963593342855b6072e5692659107337b7) ICEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.dg/Wfree-nonheap-object-2.c, w/ -fanalyzer:
char eparr[1];
void *
warn_realloc_extern_ptrarr_offset (int i, int n)
{
return __builtin_realloc (eparr + i, n);
}
% gcc-12.0.1 -fanalyzer -c e9xvubm5.c
during IPA pass: analyzer
e9xvubm5.c: In function 'warn_realloc_extern_ptrarr_offset':
e9xvubm5.c:6:10: internal compiler error: in check_dynamic_size_for_taint, at
analyzer/sm-taint.cc:1058
6 | return __builtin_realloc (eparr + i, n);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x7b4ac7 ana::region_model::check_dynamic_size_for_taint(ana::memory_space,
ana::svalue const*, ana::region_model_context*) const
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/sm-taint.cc:1058
0x1299852 ana::region_model::set_dynamic_extents(ana::region const*,
ana::svalue const*, ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/region-model.cc:3895
0x12a3510 update_model
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/region-model-impl-calls.cc:667
0x1270a0b ana::exploded_graph::process_node(ana::exploded_node*)
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/engine.cc:3808
0x127157a ana::exploded_graph::process_worklist()
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/engine.cc:3137
0x1273c00 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/engine.cc:5716
0x1274afe ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/engine.cc:5787
0x1263808 execute
/var/tmp/portage/sys-devel/gcc-12.0.1_p20220206/work/gcc-12-20220206/gcc/analyzer/analyzer-pass.cc:87
