Re: Infinite loop when running gtags in Emacs

[Shigio YAMAGUCHI]

Where did the infinite loop occur?

Although you said that 'The for loop on line 426 of mpool.c',

the line 426 is only a function call.

[libdb/mpool.c]

426:            (mp->pgout)(mp->pgcookie, bp->pgno, bp->page);

You mean that it occurred in __bt_pgout()? Otherwise, do I have

a misunderstanding something?

Shigio

2014-09-15 7:09 GMT+09:00 Matthew Leach <address@hidden>:

Hello,

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
mpool_look().

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
system.

Thanks,
--
Matt

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Shigio YAMAGUCHI <address@hidden>

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