https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109031
--- Comment #11 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Martin Liška from comment #10) > What about: > > /usr/bin/gcc -w -Werror=implicit bug892.c -o one.exe > && (./one.exe 1 | fgrep "checksum after hashing g_50 :" > 1) > && /home/dcb36/gcc/results/bin/gcc -w -O2 -fno-strict-aliasing bug892.c > -o two.exe > && (./two.exe 1 | fgrep "checksum after hashing g_50 :" > 2) > > if test $? != 0; then > exit 1 > > diff 1 2; > if test $? = 0; then > exit 1 > fi > exit 0 > > ? Thanks for the idea, but no further forward ;-|. Getting to the diff is easy. Getting the return code of 1 from the diff out to the calling perl program converted to 0 is proving to be a challenge. $ diff 1 2 1c1 < ...checksum after hashing g_50 : 646CF84D --- > ...checksum after hashing g_50 : C21BF3F9 $ echo $? 1 $
