From:
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To:
Jeremy Drake <pgsql(at)jdrake(dot)com>
Cc:
Bruce Momjian <bruce(at)momjian(dot)us>,
Alvaro Herrera <alvherre(at)commandprompt(dot)com>,
pgsql-committers <pgsql-committers(at)postgresql(dot)org>
Subject:
Re: pgsql: Remove "fmgr.h" include in cube contrib --- caused crash on a Ge
Date:
2011-09-03 14:23:09
Message-ID:
2242.1315059789@sss.pgh.pa.us (view raw or flat )
Thread:
2011-09-01 11:22:43 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-01 14:10:12 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-01 14:49:36 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-01 15:42:46 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-01 18:07:11 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-02 06:48:31 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-02 15:20:50 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-02 15:38:28 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2011-09-02 16:11:00 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-02 16:44:28 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-02 16:52:05 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-03 05:54:33 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-03 14:23:09 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-03 14:39:15 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-04 07:13:53 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-04 07:29:00 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-05 07:07:49 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-05 13:45:09 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-05 19:53:55 from Jeremy Drake <pgsql(at)jdrake(dot)com>
2011-09-05 19:55:51 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-05 20:19:19 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-03 14:35:41 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-02 16:53:12 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2011-09-04 00:51:13 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-04 01:08:41 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-04 01:25:17 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-04 01:48:38 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-04 04:30:43 from Bruce Momjian <bruce(at)momjian(dot)us>
2011-09-04 05:18:01 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2011-09-12 19:11:21 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Lists:
pgsql-committers pgsql-hackers
Jeremy Drake <pgsql(at)jdrake(dot)com> writes:
> ... I'm pretty sure that what it crashed on was
> attempting to access the global external variable CurrentMemoryContext.
Ah-hah, good insight!
> The odd thing is, that the disassembly code between the working and
> non-working was the same, except for the offsets.
The code seems to be fetching a pointer to CurrentMemoryContext from a
PC-relative location; presumably that's a literal that the dynamic
linker is supposed to update at shlib load time. I guess that pointer
is not correctly computed in the other case, or else it's fetching the
wrong pointer value.
> Still, I have no idea why adding an include would cause issues accessing
> CurrentMemoryContext.
Me either, but at least it's something to work from. You might try
diffing the working and non-working -E output from cube.c to see if
there are any changes that obviously affect CurrentMemoryContext.
regards, tom lane
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contrib --- caused crash on a GePrevious :From : Jeremy DrakeDate : 2011-09-03 05:54:33Subject : Re: pgsql: Remove "fmgr.h" include in cube contrib ---
caused crash on a Ge
