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bug#57789: Emacs 28.1 clone build with native compilation crashes on s39
From: |
Andrea Corallo |
Subject: |
bug#57789: Emacs 28.1 clone build with native compilation crashes on s390x |
Date: |
Fri, 16 Sep 2022 08:43:37 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Paul Eggert <eggert@cs.ucla.edu> writes:
> On 9/15/22 02:10, Eli Zaretskii wrote:
>>> Of course that's not remotely conclusive, but if all of the C code
>>> wasn't written with strict-aliasing in mind, then I wondered if it might
>>> make sense to consider adding -fno-strict-aliasing as a default option.
>> I don't know enough about this. Perhaps Andrea or Paul could comment.
>>
> Throwing -fno-strict-aliasing in the mix is a bit like throwing -O1
> into the mix. I'm not surprised it would cause a Heisenbug to vanish;
> it doesn't mean strict aliasing is the problem.
Hi Paul,
totally agree with you. The fact that even -g has an impact here
clearly shows that initial conditions are not necessary directly
connected with the final symptom we observe.
Best Regards
Andrea