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Infinite loop when running gtags in Emacs

From: Matthew Leach
Subject: Infinite loop when running gtags in Emacs
Date: Sun, 14 Sep 2014 22:09:26 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)


I'm trying to run 'gtags' in the src/ directory of the latest Emacs
development version. However, I seem to be running into an infinite
loop. Running gtags through gdb, there seems to be a problem with

The for loop on line 426 of mpool.c is where it seems to be getting
stuck. Below is a dump of some gdb commands that will hopefully show why
we are stuck:

(gdb) p bp
$1 = (BKT *) 0x54f70
(gdb) p bp->pgno 
$2 = 1
(gdb) p pgno
$3 = 129
(gdb) p bp->hq.cqe_next
$4 = (struct _bkt *) 0x54f70
(gdb) p head
$5 = (struct _hqh *) 0x52b28

The BKT* at 0x54f70 is self-referential. Any ideas how we could have
ended up in this state? If it helps, I'm running this on a armv7l


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