https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93547
Bug ID: 93547
Summary: ICE in real_maxval, at real.c:2593
Product: gcc
Version: 10.0
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-10.0.1-alpha20200202 snapshot (g:b817be038d94c987e02c26ed2d81b6f2ebb5f97a)
ICEs when compiling the following testcase w/ -fanalyzer:
void
wy (int);
int
f9 (void)
{
int p5 = __builtin_ilogb (__builtin_inf ());
wy (0);
return p5;
}
% gcc-10.0.1 -fanalyzer -c niaua29g.c
during IPA pass: analyzer
niaua29g.c: In function 'f9':
niaua29g.c:7:12: internal compiler error: in real_maxval, at real.c:2593
7 | int p5 = __builtin_ilogb (__builtin_inf ());
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x684722 real_maxval(real_value*, int, machine_mode)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/real.c:2593
0x12d9cf5 generic_simplify_336
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/build/gcc/generic-match.c:15447
0x1361b99 generic_simplify_EQ_EXPR
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/build/gcc/generic-match.c:52777
0xa47470 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/fold-const.c:10105
0xa516b9 fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/fold-const.c:13088
0x17adf7b ana::constraint_manager::get_or_add_equiv_class(ana::svalue_id)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/constraint-manager.cc:933
0x10f2763 ana::sm_state_map::set_state(ana::region_model*, ana::svalue_id,
unsigned int, ana::svalue_id)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/constraint-manager.h:201
0x10f2975 ana::sm_state_map::purge_for_unknown_fncall(ana::exploded_graph
const&, ana::state_machine const&, gcall const*, tree_node*,
ana::region_model*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/program-state.cc:417
0x10e5616 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_alpha20200202/work/gcc-10-20200202/gcc/analyzer/engine.cc:1039
0x10e5f9b ana::exploded_graph::process_node(ana::exploded_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/engine.cc:2411
0x10e6432 ana::exploded_graph::process_worklist()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/engine.cc:2231
0x10e6ab9 ana::impl_run_checkers(ana::logger*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/engine.cc:3552
0x10e755c ana::run_checkers()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/engine.cc:3609
0x10dd178 execute
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200202/work/gcc-10-20200202/gcc/analyzer/analyzer-pass.cc:84
