Re: Using libbacktrace in libgfortran: some questions

[Ian Lance Taylor <iant at google dot com>]

On Thu, Aug 13, 2015 at 8:25 AM, Ian Lance Taylor <iant@google.com> wrote:
> On Thu, Aug 13, 2015 at 7:11 AM, FX <fxcoudert@gmail.com> wrote:
>>
>>> I don't know why this is not working.  Everything looks fine in the
>>> a.out that you sent.  Unfortunately, I think you sent the one built
>>> without libbacktrace.  Can you send me the one built with libbacktrace?
>>
>> Attached is the a.out with libgfortran (and thus libbacktrace) linked in statically. If this isnât sufficient, I can send any file necessary (including the whole tree if need be).
>
> Thanks.  The problem seems to be that gfortran is generating DWARF
> info that looks like this:
>
> subprogram test
>   subprogram foo
>   subprogram bar
>
> libbacktrace does not expect to see this structure, and it thinks that
> foo and bar have been inlined within test, which is not the case.
>
> Please try this patch to libbacktrace and see if it helps.

And yet, that patch has absolutely nothing to do with libbacktrace.
Hmmm.  Let's try this one.

Ian

Attachment: patch.txt
Description: Text document