http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60926
--- Comment #2 from gidici61 at gmail dot com --- Register rsp is correctly aligned before "call g1"; let's assume rsp=0xB0. "call g1" pushes rip (8 bytes) on the stack. Now rsp=0xA8. Then "pushq %rbp" subtracts 8. Now rsp=0xA0. "subq $8, %rsp" subtracts 8. Now rsp=0x98 So before calling g2() rsp is not properly aligned.
