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From: Eli Zaretskii <eliz@gnu.org>
To: Juanma Barranquero <lekktu@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: GC crash on optimized build on Windows
Date: Mon, 27 Feb 2012 20:23:57 +0200	[thread overview]
Message-ID: <83399wkude.fsf@gnu.org> (raw)
In-Reply-To: <CAAeL0STQgV9ELajzKakiOVR9HRn=6UFYyH72JJmebd=OCKJRsg@mail.gmail.com>

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Mon, 27 Feb 2012 14:05:52 +0100
> 
> I just had a gc crash on an optimized build. I'm not going to file a
> bug report yet because I don't think it is repeatable at will, but I
> have the gdb session open in case someone wants me to check anything.

Can you try applying the technique for debugging crashes in GC that is
outlined in etc/DEBUG?

> #2  0x0100ffda in compact_small_strings () at alloc.c:2271
>         nbytes = 29184
>         tb = <optimized out>
>         from = <optimized out>
>         end = 0x372dffc
>         tb_end = 0x372dffc
>         from_end = <optimized out>
>         b = 0x372c000
>         next = <optimized out>
>         to = <optimized out>
>         to_end = <optimized out>

In this frame, what does "info address from" say?  If it says that
`from' is stored in some register, can you display the value of that
register, and using that value reproduce what is from->string?

And which Emacs version is that: 24.0.93 or 24.0.94?



      reply	other threads:[~2012-02-27 18:23 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-27 13:05 GC crash on optimized build on Windows Juanma Barranquero
2012-02-27 18:23 ` Eli Zaretskii [this message]

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