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

[gnugcc at marino dot st]

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

--- Comment #22 from John Marino <gnugcc at marino dot st> ---
(gdb) p/x $rax
$1 = 0x800af0748