[Bug analyzer/94816] New: ICE: Segmentation fault (in ana::region_model::add_region_for_type)

asolokha at gmx dot com gcc-bugzilla@gcc.gnu.org
Tue Apr 28 12:21:40 GMT 2020


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94816

            Bug ID: 94816
           Summary: ICE: Segmentation fault (in
                    ana::region_model::add_region_for_type)
           Product: gcc
           Version: unknown
            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: ---

g++-10.0.1-alpha20200426 snapshot (g:29f55115583a0dab6cbac749c4f0804fd88e9536)
ICEs when compiling the following testcase, reduced from
gcc/testsuite/g++.dg/init/array51.C, w/ -O1 -fanalyzer:

struct jr;

struct ch {
  int jr::*rx;
};

ch
ad ()
{
  return ch ();
}

% g++-10.0.1 -O1 -fanalyzer -c noivoaih.C
during IPA pass: analyzer
noivoaih.C: In function 'ch ad()':
noivoaih.C:10:14: internal compiler error: Segmentation fault
   10 |   return ch ();
      |              ^
0xfebacf crash_signal
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/toplev.c:328
0x136769e ana::region_model::add_region_for_type(ana::region_id, tree_node*,
ana::region_model_context*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/region-model.cc:6491
0x136d918 ana::map_region::get_or_create(ana::region_model*, ana::region_id,
tree_node*, tree_node*, ana::region_model_context*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/region-model.cc:1832
0x136ec2e ana::region_model::copy_struct_region(ana::region_id,
ana::struct_region*, ana::struct_region*, ana::region_model_context*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/region-model.cc:1304
0x134e9d1 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_alpha20200426/work/gcc-10-20200426/gcc/analyzer/engine.cc:1022
0x134f3e1 ana::exploded_graph::process_node(ana::exploded_node*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/engine.cc:2530
0x134f8ca ana::exploded_graph::process_worklist()
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/engine.cc:2348
0x134fffb ana::impl_run_checkers(ana::logger*)
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/engine.cc:4029
0x1350bcc ana::run_checkers()
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/engine.cc:4097
0x1345778 execute
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200426/work/gcc-10-20200426/gcc/analyzer/analyzer-pass.cc:84


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