https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98745
Bug ID: 98745
Summary: [11 Regression] ICE: Segmentation fault (in
print_mem_ref / c_pretty_printer::primary_expression)
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-11.0.0-alpha20210117 snapshot (g:0f4c8f517b7954e113afb4d5c7212123c8ee2418)
ICEs when compiling the following testcase w/ -fanalyzer:
struct eo {
eo () { a6 = new int; }
~eo () { delete a6; }
void cl () { bf = 0; }
int *a6;
int bf;
};
struct ja {
ja (int *k9) : ia (k9) { }
ja (ja &);
bool operator!= (ja w4) { return w4.ia; }
int *ia;
};
struct vi {
vi () { sb = new eo; }
~vi () { delete sb; }
ja x6 () { return sb->a6; }
vi
da ()
{
vi ns;
ja qf = nullptr;
while (qf != x6 ())
ns.sb->cl ();
return ns;
}
eo *sb;
};
vi
fi ()
{
return vi ().da ();
}
% g++-11.0.0 -fanalyzer -w -c e686urfg.cc
during IPA pass: analyzer
cc1plus: internal compiler error: Segmentation fault
0x10bf6ef crash_signal
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/toplev.c:327
0xba33f1 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/tree.h:3337
0xba33f1 c_pretty_printer::primary_expression(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/c-family/c-pretty-print.c:1343
0xba46f8 print_mem_ref
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/c-family/c-pretty-print.c:2043
0x998d65 dump_expr
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/cp/error.c:2366
0x99df70 expr_to_string(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/cp/error.c:3187
0x99e6bc cp_printer
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/cp/error.c:4355
0x1cb7a85 pp_format(pretty_printer*, text_info*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/pretty-print.c:1475
0x14663bb ana::evdesc::event_desc::formatted_print(char const*, ...) const
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/pending-diagnostic.cc:64
0x1c43156 ana::warning_event::get_desc(bool) const
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/checker-path.cc:871
0x1c42a02 ana::checker_event::prepare_for_emission(ana::checker_path*,
ana::pending_diagnostic*, diagnostic_event_id_t)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/checker-path.cc:145
0x1c52ef8 ana::checker_path::prepare_for_emission(ana::pending_diagnostic*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/checker-path.h:506
0x1c52ef8 ana::diagnostic_manager::emit_saved_diagnostic(ana::exploded_graph
const&, ana::saved_diagnostic const&, ana::exploded_path const&, gimple const*,
int)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/diagnostic-manager.cc:666
0x1c55550 ana::dedupe_winners::emit_best(ana::diagnostic_manager*,
ana::exploded_graph const&)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/diagnostic-manager.cc:567
0x1c53308 ana::diagnostic_manager::emit_saved_diagnostics(ana::exploded_graph
const&)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/diagnostic-manager.cc:620
0x145c7f2 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/engine.cc:4780
0x145d606 ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/engine.cc:4837
0x144f348 execute
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210117/work/gcc-11-20210117/gcc/analyzer/analyzer-pass.cc:87
If one runs g++ several times in a row, analyzer sometimes makes it to emit a
warning on leak of '<anonymous>.vi::sb' before the ICE.
