https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71625
--- Comment #8 from nsz at gcc dot gnu.org --- (In reply to Jakub Jelinek from comment #6) > (In reply to Marc Glisse from comment #1) > > Or we could do like clang and improve alias analysis. We should know that > > array doesn't escape and thus that hallo() cannot write to it. > > The strlen pass uses the alias oracle, so the question is why it thinks the > call might affect the array. the optimization fails with const char array[] = "abc"; too (which is why i thought it was about pure strlen depending on global state other than the argument.. static const array works though).
