https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101570
Bug ID: 101570
Summary: [12 Regression] ICE in
maybe_reconstruct_from_def_stmt, at
analyzer/analyzer.cc:133
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: ---
gcc-12.0.0-alpha20210718 snapshot (g:6ae8aac19cdbdbd96d90f86e4d8505fe121bdf06)
ICEs when compiling the following testcase, reduced from
gcc/testsuite/gcc.dg/torture/pr70370.c, w/ -fanalyzer:
void
test2 (_Complex double f)
{
__asm__ ("" : "=r" (__real f));
}
% gcc-12.0.0 -fanalyzer -c erc6pp1g.c
during IPA pass: analyzer
erc6pp1g.c: In function 'test2':
erc6pp1g.c:4:3: internal compiler error: in maybe_reconstruct_from_def_stmt, at
analyzer/analyzer.cc:133
4 | __asm__ ("" : "=r" (__real f));
| ^~~~~~~
0x7ff6f0 maybe_reconstruct_from_def_stmt
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/analyzer.cc:133
0x7ff6f0 fixup_tree_for_diagnostic_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/analyzer.cc:180
0x1a32b3a fixup_tree_for_diagnostic_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/hash-table.h:687
0x1a32b3a ana::fixup_tree_for_diagnostic(tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/analyzer.cc:201
0x120761f ana::region_model::check_for_poison(ana::svalue const*, tree_node*,
ana::region_model_context*) const
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/region-model.cc:839
0x120ba80 ana::region_model::get_rvalue(tree_node*, ana::region_model_context*)
const
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/region-model.cc:1842
0x120ba80 ana::region_model::get_gassign_result(gassign const*,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/region-model.cc:765
0x120c62c ana::region_model::on_assignment(gassign const*,
ana::region_model_context*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/region-model.cc:869
0x11e998d ana::exploded_node::on_stmt(ana::exploded_graph&, ana::supernode
const*, gimple const*, ana::program_state*, ana::uncertainty_t*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/engine.cc:1223
0x11ebf22 ana::exploded_graph::process_node(ana::exploded_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/engine.cc:3098
0x11eca8a ana::exploded_graph::process_worklist()
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/engine.cc:2684
0x11eeee5 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/engine.cc:4972
0x11efd80 ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/engine.cc:5043
0x11e0e48 execute
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20210718/work/gcc-12-20210718/gcc/analyzer/analyzer-pass.cc:87
