https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96646
Bug ID: 96646
Summary: [11 Regression] ICE: Segmentation fault (in
tree_class_check)
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:
struct zx {
struct zx *b4, *g0;
};
struct oo {
int ph;
struct zx el;
};
inline void
k7 (struct zx *xj)
{
xj->b4->g0 = 0;
xj->b4 = 0;
}
void
n8 (struct oo *yx)
{
k7 (&yx->el);
n8 (yx);
}
% gcc-11.0.0 -O1 -fanalyzer -c rn6i1ylt.c
during IPA pass: analyzer
rn6i1ylt.c:13:5: internal compiler error: Segmentation fault
13 | xj->b4->g0 = 0;
| ~~^~~~
0xd7da1f crash_signal
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/toplev.c:327
0x89a9d9 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/tree.h:3417
0x89a9d9 c_pretty_printer::unary_expression(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c-family/c-pretty-print.c:1793
0x898fd7 c_pretty_printer::postfix_expression(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c-family/c-pretty-print.c:1605
0x89a5f5 c_pretty_printer::unary_expression(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c-family/c-pretty-print.c:1797
0x898fd7 c_pretty_printer::postfix_expression(tree_node*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c-family/c-pretty-print.c:1605
0x8017fd c_tree_printer
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c/c-objc-common.c:317
0x8017fd c_tree_printer
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/c/c-objc-common.c:254
0x189db05 pp_format(pretty_printer*, text_info*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/pretty-print.c:1475
0x1850f1b ana::evdesc::event_desc::formatted_print(char const*, ...) const
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/pending-diagnostic.cc:63
0x183edf6 ana::state_change_event::get_desc(bool) const
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/checker-path.cc:255
0x183e892 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_alpha20200816/work/gcc-11-20200816/gcc/analyzer/checker-path.cc:144
0x184e360 ana::checker_path::prepare_for_emission(ana::pending_diagnostic*)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/checker-path.h:498
0x184e360 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_alpha20200816/work/gcc-11-20200816/gcc/analyzer/diagnostic-manager.cc:568
0x184fc7e ana::dedupe_winners::emit_best(ana::diagnostic_manager*,
ana::exploded_graph const&)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/diagnostic-manager.cc:469
0x184e728 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:522
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
