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bug#33709: Hang when compiled with --coverage and gcc 7.3
From: |
Stefan Kangas |
Subject: |
bug#33709: Hang when compiled with --coverage and gcc 7.3 |
Date: |
Mon, 31 Aug 2020 10:36:36 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Paul Eggert <paul.eggert@verizon.net> writes:
> I'm surprised that --coverage ever worked in a dumped emacs. I think libgcov
> uses the dynamic linker's malloc (so Emacs has *three* malloc implementations)
> and our trick for switching from the Emacs malloc in temacs to the system
> malloc
> in bootstrap-emacs won't work for memory allocated for
> --coverage. Unfortunately, the libgcov actions do not seem to be easy to
> disable
> in temacs and re-enable in bootstrap-emacs.
>
> I suggest that we just say this combination isn't supported; if you want to
> build Emacs with gcc --coverage you can configure with CANNOT_DUMP=yes.
>
> If the portable dumper ever gets working, --coverage should be easy to
> support,
> of course.
(That was 1.5 years ago.)
Any updates here now that we have the portable dumper? Thanks.
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