bug#52376: 28.0.90; libdir is missing from native-comp-eln-load-path with GTK3 build

[Andrea Corallo]

Andrea Corallo <akrl@sdf.org> writes:

> Bhavin Gandhi <bhavin7392@gmail.com> writes:
>
>> On Thu, 9 Dec 2021 at 22:53, Andrea Corallo <akrl@sdf.org> wrote:
>>>
>>> I suggest to set a breakpoint at pdumper.c:5321 and print 'fndata' to
>>> see where we do expect to find the installed eln we don't find.
>>
>> It did not reach that breakpoint, and Emacs just started as usual. Seems
>> like the RELOC_NATIVE_COMP_UNIT case is not getting matched.
>
> Actually this is very bizarre.  A native compiled Emacs that has been
> dumped has to go through there to startup so either:
>
> 1- we are debugging temacs and non emacs
> 2- emacs was compiled with native compilation
> 3- the breakpoint is not working as expected, maybe because it's an
> optimized build.
>
> I guess most likely we are looking at case 3 here.  Could you try in
> this case building pdumper.c (or all Emacs) with -O0 -g3?
>
> Thanks
>
>   Andrea

Just to be 100% sure, one mine src/pdumper.c. from emacs28 line 5321 is:

           if (file_access_p (fndata, F_OK))

Thanks

  Andrea