https://issues.dlang.org/show_bug.cgi?id=15619
yebblies <yebbl...@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |yebbl...@gmail.com Component|dmd |druntime --- Comment #3 from yebblies <yebbl...@gmail.com> --- The array operation uses xmm6/xmm7 internally without saving them, but they are callee saved on win64. Probably introduced by this: https://github.com/D-Programming-Language/druntime/pull/829 --