https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86437
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |WORKSFORME Status|WAITING |RESOLVED --- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Even with " -fmax-stack-var-size=2096 -Ofast" get the __builtin_malloc. Maybe you have a soft memory limit set: max memory size (kbytes, -m) unlimited Anyways this works for me.