Re: debugging core dump

[phillip.lord@russet.org.uk (Phillip Lord)]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> I have both emacs-25 head and master building. I have also had
>> emacs-25.1 building on other machines. Not sure how to debug this;
>> advice welcome.
>
> Here's what I do, in those cases:
>
>    M-x cd .../emacs/src
>    M-x gud-gdb RET gdb ... temacs RET
>    b maybe_call_debugger
>    r -batch  -l loadup dump
>    [...crash...]
>    bt
>
> the `r` line may need to be adjusted depending on whether the crash
> happens for the generation of src/bootstrap-emacs or src/emacs: I just
> copy&paste it from the failed build.


I bisected instead. It's the "-no-pie" problem that Paul fixed in
99892eeec. Guess this is the first time I've tried to compile other than
head on this version.

Phil