Hi, Yes, I try this options and a few more (for example -mno-red-zone), but no one change the generated assembler code. ----- Mensaje original ----- De: kevin diggs <diggskevin38@xxxxxxxxx> Para: jose gomez valcarcel <jcgv33@xxxxxxxx> CC: "gcc-help@xxxxxxxxxxx" <gcc-help@xxxxxxxxxxx>; "jcgv@xxxxxxxxxx" <jcgv@xxxxxxxxxx> Enviado: lunes 29 de agosto de 2011 23:11 Asunto: Re: gcc return struct code generation Hi, On Mon, Aug 29, 2011 at 6:41 AM, jose gomez valcarcel <jcgv33@xxxxxxxx> wrote: > > gcc -fPIE -fno-stack-protector -O2 -Wall -std=gnu99 -nostdinc -S z.c > What happens if you add -fomit-frame-pointer? kevin