https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64755
mednafen at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mednafen at gmail dot com --- Comment #2 from mednafen at gmail dot com --- It looks like your code violates strict aliasing rules. Does the code in question work as you intend it to if you compile with -fno-strict-aliasing ?