https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68730
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Note that if you want to reproduce this by running cc1, add -march=x86-64:
$ ./cc1 -quiet v.c -O2 -fno-if-conversion -m32
$ ./cc1 -quiet v.c -O2 -fno-if-conversion -m32 -march=x86-64
v.c: In function ‘fn1’:
v.c:48:1: error: dominator of 13 should be 36, not 35
}
^
v.c:48:1: error: dominator of 28 should be 31, not 30
v.c:48:1: error: dominator of 31 status unknown
v.c:48:1: internal compiler error: Segmentation fault
0xdc88c2 crash_signal
/home/marek/src/gcc/gcc/toplev.c:334
0x95036a verify_dominators(cdi_direction)
/home/marek/src/gcc/gcc/dominance.c:1032
0x94e111 checking_verify_dominators
/home/marek/src/gcc/gcc/dominance.h:71
0x94f8a7 calculate_dominance_info(cdi_direction)
/home/marek/src/gcc/gcc/dominance.c:664
0xb8811c ira
/home/marek/src/gcc/gcc/ira.c:5155
0xb88a52 execute
/home/marek/src/gcc/gcc/ira.c:5511
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.
