http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49191
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-08 17:47:32 UTC --- Perhaps something like: union { int i; char c[8]; } u; int main () { int *p; asm volatile ("" : "=r" (p) : "0" (&u.c[1])); *p++; return 0; } compile+run and check for zero exit code? Perhaps __ia64__ should be explicitly listed as strict alignment in addition to that, because I believe it will succeed there, just with annoying messages in dmesg.