Hello, Am Sonntag, den 04.05.2014, 13:42 +0200 schrieb Paweł Dziepak: > The behavior in GCC 4.9 has changed. _Alignof(long long) now is always > 4. _Alignof(max_align_t) remains 8 though. just to be clear, is it that _Alignof(max_align_t) is 8 for their version of max_align_t or for your version. Rich is correct, if it would be for your version, this would be a bug. But if it would be for their version, this would be just a unilateral decision about the API they have taken, and musl should then mimic that behavior. The idea behind that might be that they consider that some special type(s) that are C extensions have "usual allignment". Jens -- :: INRIA Nancy Grand Est :: http://www.loria.fr/~gustedt/ :: :: AlGorille ::::::::::::::: office Nancy : +33 383593090 :: :: ICube :::::::::::::: office Strasbourg : +33 368854536 :: :: ::::::::::::::::::::::::::: gsm France : +33 651400183 :: :: :::::::::::::::::::: gsm international : +49 15737185122 ::