https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88732
--- Comment #2 from Amos Wang <amocywang at gmail dot com> --- (In reply to Marc Glisse from comment #1) > Why not read the documentation for that function? > "If x is 0, the result is undefined." Why the results are different at different optimizing optionss? If it's an undefined behaviour, I think all results should be the same.
