https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109031
--- Comment #7 from David Binderman <dcb314 at hotmail dot com> --- (In reply to David Binderman from comment #4) > Created attachment 54596 [details] > C source code > > After 3 hours further reduction. I am struggling with further reduction. My bash knowledge is short. My cvise script is: /usr/bin/gcc -w -Werror=implicit bug892.c \ && (./a.out 1 > 1) \ && /home/dcb36/gcc/results/bin/gcc -w -O2 -fno-strict-aliasing bug892.c \ && (./a.out 1 > 2) \ && diff 1 2; \ but then if diff returns 1, the script should return 0 and if diff returns 0, then the script should return 1.