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Re: (select-window nil) crash with gcc-8.2.0

From: Eli Zaretskii
Subject: Re: (select-window nil) crash with gcc-8.2.0
Date: Sun, 07 Apr 2019 06:50:11 +0300
User-agent: K-9 Mail for Android

On April 7, 2019 5:11:57 AM GMT+03:00, Madhu <address@hidden> wrote:
> Hello, Compiling emacs with gcc-8.2.0 on amd64 with CFLAGS = -O2 -Os
> causes emacs to crash when invoking M-: (select-window nil).  Clearly
> gcc-8.2.0 is miscompiling code with these optimization settings (-O2
> -Os) and I'm seeing crashes elsewhere where I am unable to isolate the
> problem.  However the emacs crash is easily isolatable and could point
> to the bug in either gcc, (or possibly in emacs if there is some wrong
> assumption). Maybe someone with gcc-8.2.0 can verify the crash?

Please state the version of Emacs in which this happened, and preferably also 
show a backtrace from the crash that identifies the problematic variables on 
the C level.


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