https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63520
Bug ID: 63520
Summary: ICE: in get_biv_step, at loop-iv.c:824 with
-fsanitize=undefined on ppc64
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target: powerpc64-unknown-linux-gnu
trippels@gcc1-power7 libdecnumber % cat decNumber.i
int a;
void
fn1 (void)
{
for (;;)
{
if (a == 1)
break;
a -= 1;
}
}
trippels@gcc1-power7 libdecnumber % gcc -c -fsanitize=undefined -O2 decNumber.i
decNumber.i: In function ‘fn1’:
decNumber.i:11:1: internal compiler error: in get_biv_step, at loop-iv.c:824
}
^
0x105a9b13 get_biv_step
../../gcc/gcc/loop-iv.c:824
0x105a9b13 iv_analyze_biv
../../gcc/gcc/loop-iv.c:913
0x105a9f8b iv_analyze_op
../../gcc/gcc/loop-iv.c:1189
0x105a9e6f iv_analyze_op
../../gcc/gcc/loop-iv.c:1159
0x105aa2cb iv_analyze_expr(rtx_insn*, rtx_def*, machine_mode, rtx_iv*)
../../gcc/gcc/loop-iv.c:969
0x105aa3d3 iv_analyze_expr(rtx_insn*, rtx_def*, machine_mode, rtx_iv*)
../../gcc/gcc/loop-iv.c:1025
0x105aabeb iv_analyze_def
../../gcc/gcc/loop-iv.c:1120
0x105a9df3 iv_analyze_op
../../gcc/gcc/loop-iv.c:1191
0x105ab30b iv_number_of_iterations
../../gcc/gcc/loop-iv.c:2387
0x105ab30b check_simple_exit
../../gcc/gcc/loop-iv.c:2950
0x105ab30b find_simple_exit(loop*, niter_desc*)
../../gcc/gcc/loop-iv.c:2975
0x105ac97f get_simple_loop_desc(loop*)
../../gcc/gcc/loop-iv.c:3056
0x10d8e99f doloop_optimize
../../gcc/gcc/loop-doloop.c:617
0x10d8e99f doloop_optimize_loops()
../../gcc/gcc/loop-doloop.c:745
0x1059f253 execute
../../gcc/gcc/loop-init.c:643
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
