https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89497
--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #23) > Created attachment 45926 [details] > rh1686696.c > > r269302 also fixed the following testcase that has been miscompiled on > s390x-linux with -march=zEC12 -O2 -fno-strict-aliasing at least (or > -march=zEC12 -O2, -fno-strict-aliasing just because the testcase isn't > completely kosher, as it initializes malloced memory through long long array > and then accesses it as a struct containing long long and long long array > fields). > Is it worth adding this into the testsuite? Hmm, the patch doesn't contain a wrong-code fix - at least not that I know of. As we've seen it may change generated code so are you sure the reason the testcase was miscompiled didn't go latent?
