https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118758
--- Comment #3 from David Binderman <dcb314 at hotmail dot com> --- The original code is from csmith, so: foundBugs $ rm ./a.out && ../results/bin/gcc -w bug1086.c && ./a.out 1 > /tmp/0 foundBugs $ rm ./a.out && ../results/bin/gcc -w -O1 bug1086.c && ./a.out 1 > /tmp/1 foundBugs $ rm ./a.out && ../results/bin/gcc -w -O2 bug1086.c && ./a.out 1 > /tmp/2 foundBugs $ rm ./a.out && ../results/bin/gcc -w -O3 bug1086.c && ./a.out 1 > /tmp/3 foundBugs $ diff /tmp/0 /tmp/1 | head foundBugs $ diff /tmp/1 /tmp/2 | head foundBugs $ diff /tmp/2 /tmp/3 | head -20 22,31c22,31 < ...checksum after hashing g_96 : AC52A137 < ...checksum after hashing g_112 : 76BB478C < ...checksum after hashing g_115 : E702AF55 < ...checksum after hashing g_120 : D2913B16 < ...checksum after hashing g_122 : 509DFFB2 < ...checksum after hashing g_123 : 3C438752 < ...checksum after hashing g_126 : 2EE87DAF < ...checksum after hashing g_159.f1 : CCF3889D < ...checksum after hashing g_171.f0 : D5BDB4B1 < ...checksum after hashing g_174[i] : 8639214 --- > ...checksum after hashing g_96 : A3A5FF7D > ...checksum after hashing g_112 : 37CBB533 > ...checksum after hashing g_115 : 75843C96 > ...checksum after hashing g_120 : 9BB794D6 > ...checksum after hashing g_122 : 1FCEC711 > ...checksum after hashing g_123 : D3B439C9 > ...checksum after hashing g_126 : 8E5B985A > ...checksum after hashing g_159.f1 : C699E54E foundBugs $
