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bug#13611: SEGV during SMOB GC
From: |
Ludovic Courtès |
Subject: |
bug#13611: SEGV during SMOB GC |
Date: |
Tue, 05 Feb 2013 17:41:22 +0100 |
User-agent: |
Gnus/5.130005 (Ma Gnus v0.5) Emacs/24.2 (gnu/linux) |
Hi,
Mike Gran <address@hidden> skribis:
>> From: Ludovic Courtès <address@hidden>
>
>> Is there any chance that you’re using a GC 7.3 pre-release?
>
> Using gc-7.2b-2.fc17.i686
OK.
>> There was a similar report on IRC, and the fix appears to be:
>
> It does fix my SEGV
Good.
[...]
> Count of GC SMOB marks from null thread: 176
> Count of GC SMOB marks from current thread: 825
>
> Is that expected that GC is sometimes called from a
> thread where scm_i_current_thread is null and sometimes
> called from a thread where scm_i_current_thread is
> not null?
Can you check whether your GC was built with --enable-parallel-mark?
I’m confident that the SMOB mark procedure is never called with null
scm_i_current_thread with 7.2 compiled with the default options (the
GnuTLS bindings rely on this, and I had not seen any such report until
someone tried with GC 7.3pre, which uses the parallel marker by
default.)
Thanks!
Ludo’.