https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60976
--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Rene Koecher from comment #14) > I agree on your point here, however shouldn't an unchanged codebase (and > we're not using C++11 features or -std=c++11 yet) at least keep the same > performance? No, because the standard library headers you include are not unchanged if you upgrade the compiler. > It's understandable that standards compliance can counter performance but I > honestly wouldn't expect the compiler performance of older code / code not > using the new features to drop that drastically.. Please provide a testcase demonstrating the problem with pre-C++11 code.
