Re: Enabling some -Werror=format* by default?

From	Guillem Jover <guillem@debian.org>
Newsgroups	linux.debian.devel
Subject	Re: Enabling some -Werror=format* by default?
Date	2024-06-11 12:10 +0200
Message-ID	<IO6BY-285a-17@gated-at.bofh.it> (permalink)
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Hi!

On Mon, 2024-06-10 at 18:01:58 +0200, Helmut Grohne wrote:
> Ideally, we'd not just do a rebuild with the flags, but also do a
> rebuild without and then compare the binary .debs. In the event that we
> misguide configure, we expect the .debs to differ and otherwise to equal
> due to the work of the reproducible builds folks. That equality has a
> really annoying difference in practice though: Build ids are dependent
> on the compiler flags, so the comparison would have to magically ignore
> changes in build id and this is where things become quite difficult.

A quick check seems to indicate warning flags do not get recorded in
the object files, which make sense as these are not supposed to change
the emitted objects.

(This can be seen with «dwarfdump .../*.debug | grep DW_AT_producer»
on the debug files from the -dbgsym packages.)

Thanks,
Guillem

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Thread

Enabling some -Werror=format* by default? Andrey Rakhmatullin <wrar@debian.org> - 2024-06-06 21:20 +0200
  Re: Enabling some -Werror=format* by default? Helmut Grohne <helmut@subdivi.de> - 2024-06-10 12:40 +0200
    Re: Enabling some -Werror=format* by default? Andrey Rakhmatullin <wrar@debian.org> - 2024-06-10 13:10 +0200
      Re: Enabling some -Werror=format* by default? Guillem Jover <guillem@debian.org> - 2024-06-10 16:30 +0200
        Re: Enabling some -Werror=format* by default? Andrey Rakhmatullin <wrar@debian.org> - 2024-06-10 17:10 +0200
          Re: Enabling some -Werror=format* by default? Guillem Jover <guillem@debian.org> - 2024-06-10 18:30 +0200
        Re: Enabling some -Werror=format* by default? Andrey Rakhmatullin <wrar@debian.org> - 2024-06-10 17:10 +0200
        Re: Enabling some -Werror=format* by default? Simon McVittie <smcv@debian.org> - 2024-06-10 17:10 +0200
      Re: Enabling some -Werror=format* by default? Helmut Grohne <helmut@subdivi.de> - 2024-06-10 18:30 +0200
        Re: Enabling some -Werror=format* by default? Fay Stegerman <flx@obfusk.net> - 2024-06-11 03:00 +0200
        Re: Enabling some -Werror=format* by default? Guillem Jover <guillem@debian.org> - 2024-06-11 12:10 +0200

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