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bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilati
From: |
Eli Zaretskii |
Subject: |
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation |
Date: |
Fri, 23 Jun 2023 08:32:26 +0300 |
> From: Arash Esbati <arash@gnu.org>
> Cc: "eliz@gnu.org" <eliz@gnu.org>, "63365@debbugs.gnu.org"
> <63365@debbugs.gnu.org>, " akrl@sdf.org" <akrl@sdf.org>,
> AndrĂ¡s Svraka
> <svraka.andras@gmail.com>
> Date: Thu, 22 Jun 2023 22:34:48 +0200
>
> Many thanks for digging into this. I can confirm that Emacs builds with
> -fno-optimize-sibling-calls in CFLAGS. I have a script which (now)
> does:
>
> CFLAGS='-O3 -g0 -pipe -fno-optimize-sibling-calls' \
> ./configure ...
>
> and it works again.
>
> Now the question is: Is this considered a GCC bug and we should close
> this report as notabug?
AFAIR, last Andrea looked into this he was surprised by this finding
and didn't understand how -foptimize-sibling-calls could cause such
problems. I hope Andrea will come up with some tests for you guys to
provide more information, so he does eventually understand the
cause(s). I don't think we can in good faith claim this is a GCC bug
before we understand the problem better.
Meanwhile, I'd like to consider a PROBLEMS entry about this, if that's
needed. Do I understand correctly that -fno-optimize-sibling-calls is
needed for successful building of Emacs 29.0.92 using MinGW64 GCC 13.1?
If so, I think we should have this in PROBLEMS.
Also, why are you using -O3? That is not recommended when building
Emacs. (But I understand that -foptimize-sibling-calls is in -O2, not
just in -O3, and so -fno-optimize-sibling-calls is needed even if
using -O2, right?)
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/08
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Cyril Arnould, 2023/06/16
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/22
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation,
Eli Zaretskii <=
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Arash Esbati, 2023/06/23
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Deus Max, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Deus Max, 2023/06/24
- bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/24
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Andrea Corallo, 2023/06/25
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Eli Zaretskii, 2023/06/25
bug#63365: 30.0.50; GCC 13.1 breaks building Emacs with native-compilation, Andrea Corallo, 2023/06/25