[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 #19 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to John Marino from comment #18)
> does this help?
> 

Please show the output of

(gdb) disass