https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123102
--- Comment #12 from David Binderman <dcb314 at hotmail dot com> --- I had another look at this one and it now seems to me that the problem is someplace between date 20200317 g:1fef0148be4b4066 and 20200325, g:6e4cd3cd259 dcb@raspberrypi:~/cvise $ for i in ~/gcc/results.202003*/bin/gcc; do echo $i; $i -w -fno-strict-aliasing -O1 bug1159.c && ./a.out 1 2>&1 | grep "checksum after hashing g_163 :" ; done /home/dcb/gcc/results.20200317.1fef0148be4b4066/bin/gcc ...checksum after hashing g_163 : 133818A3 /home/dcb/gcc/results.20200325.6e4cd3cd259af2b5/bin/gcc ...checksum after hashing g_163 : DF92183D dcb@raspberrypi:~/cvise $ That is a range of 156 commits. For the code in comment 8, the situation seems different: dcb@raspberrypi:~/cvise $ for i in ~/gcc/results.202*/bin/gcc; do echo $i; $i -w -fno-strict-aliasing -O1 bug1159B.c && ./a.out ; done /home/dcb/gcc/results.20200325.6e4cd3cd259af2b5/bin/gcc /home/dcb/gcc/results.20200403.51ecad3c0327418c/bin/gcc /home/dcb/gcc/results.20260114.ubsan/bin/gcc Aborted /home/dcb/gcc/results.20260119.ubsan/bin/gcc Aborted There might be two bugs.
