On 01/02/2016 06:01 PM, Jeffrey Walton wrote: > I'm examining a crash on Cygwin-x64 (2.3.1) with GCC 5.2 (5.2.0). The > crash is on a move instruction I am not familiar with. The instruction > is ' mov (%r11,%rax,1),%dl'. > > Can anyone explain the instruction to me? IIUC, this is mov dl, BYTE PTR [r11+rax] in Intel syntax (https://sourceware.org/binutils/docs/as/i386_002dMemory.html#i386_002dMemory). -- Regards, Mikhail Maltsev