https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61043
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to andysem from comment #8) > Created attachment 39751 [details] > A new testcase which produces invalid code with gcc 5.4 I think this testcase is violating C++ ODR. In that INSTRUCTION_SET::my_simd_func_impl is the same between the TUs. If you had used an anonymous namespace, it should have worked correctly. If anonymous namespace does not work, please file a separate bug.