https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96699
Bug ID: 96699 Summary: [11 Regression] ICE in fold_convert_const_int_from_real, at fold-const.c:2038 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/ -fanalyzer: struct qi { union { int hj; float sl; }; }; void i2 (struct qi *la) { if (la->hj == 0) la->sl = 0.0f; } % gcc-11.0.0 -fanalyzer -c lnlqkm5b.c during IPA pass: analyzer lnlqkm5b.c: In function 'i2': lnlqkm5b.c:12:12: internal compiler error: in fold_convert_const_int_from_real, at fold-const.c:2038 12 | la->sl = 0.0f; | ~~~~~~~^~~~~~ 0x62e70b fold_convert_const_int_from_real /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/fold-const.c:2038 0x62e70b fold_convert_const /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/fold-const.c:2284 0xa7016d fold_unary_loc(unsigned int, tree_code, tree_node*, tree_node*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/fold-const.c:8731 0x1123e9c ana::region_model_manager::maybe_fold_unaryop(tree_node*, tree_code, ana::svalue const*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model-manager.cc:369 0x1123f8a ana::region_model_manager::get_or_create_unaryop(tree_node*, tree_code, ana::svalue const*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model-manager.cc:382 0x1123f8a ana::region_model_manager::get_or_create_cast(tree_node*, ana::svalue const*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/region-model-manager.cc:399 0x114a1f3 ana::initial_svalue::implicitly_live_p(hash_set<ana::svalue const*, false, default_hash_traits<ana::svalue const*> > const&, ana::region_model const*) const /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/svalue.cc:529 0x114a1f3 ana::initial_svalue::implicitly_live_p(hash_set<ana::svalue const*, false, default_hash_traits<ana::svalue const*> > const&, ana::region_model const*) const /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/svalue.cc:518 0x184ad0d ana::dead_svalue_purger::should_purge_p(ana::svalue const*) const /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/constraint-manager.cc:1613 0x184ad0d void ana::constraint_manager::purge<ana::dead_svalue_purger>(ana::dead_svalue_purger const&, ana::purge_stats*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/constraint-manager.cc:1494 0x1849fa6 ana::constraint_manager::on_liveness_change(hash_set<ana::svalue const*, false, default_hash_traits<ana::svalue const*> > const&, ana::region_model const*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/constraint-manager.cc:1630 0x1103f5d ana::program_state::detect_leaks(ana::program_state const&, ana::program_state const&, ana::svalue const*, ana::extrinsic_state const&, ana::region_model_context*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/program-state.cc:1037 0x10f430a ana::exploded_graph::process_node(ana::exploded_node*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:2538 0x10f4d5a ana::exploded_graph::process_worklist() /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:2341 0x10f6e8f ana::impl_run_checkers(ana::logger*) /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200816/work/gcc-11-20200816/gcc/analyzer/engine.cc:4107 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