[Bug target/77405] SIGBUS from gnatmake in stage 3 (gcc 7.0)

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77405

--- Comment #23 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to John Marino from comment #22)
> (gdb) p/x $rax
> $1 = 0x800af0748

Your __gnat_malloc doesn't return memory aligned to 16 bytes.  This
violates x86-64 psABI.