https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61979
Marc Glisse <glisse at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #7 from Marc Glisse <glisse at gcc dot gnu.org> --- Your testcase is missing a ';', a #include and a return. You don't say how you compiled, but clearly you didn't pass any optimization flag (-O2 for instance), so you shouldn't expect optimized code.