Re: [GENERAL] Bus error in libxml2 in postgresql 9.2.x on FreeBSD

[Achilleas Mantzios]

Hello Steve,
this reminds me the problems i had when trying to install pl/java in postgresql 
9.2 FreeBSD :
http://lists.freebsd.org/pipermail/freebsd-java/2013-February/010019.html
http://lists.freebsd.org/pipermail/freebsd-java/2013-February/010021.html
http://lists.freebsd.org/pipermail/freebsd-java/2013-February/010022.html

The solution was to explicit link postgresql with /usr/lib/libpthread.so in 
src/backend/Makefile

postgres: $(OBJS)
$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_EX) $(export_dynamic) $(call 
expand_subsys,$^) $(LIBS) -lpthread -o $@

Just an advice, you are also likely to find answers for similar problems in 
FreeBSD lists.

On 16/12/2013 16:41, Steve McCoy wrote:

Hello,

I found some semi-recent messages related to this in 9.0.x, but wanted to confirm for anybody searching that the same issue exists in 9.2.x. It crashes for me with a similar backtrace as [Laurentius 
Purba’s][1]. The same fix/workaround applies as well: Compile libxml2 without the “threads” option.


If I’m understanding the explanations correctly, the issue is that libxml2+threads expects something to be initialized by the calling program (postgres), but since the program isn’t multithreaded, 
this doesn’t happen. It sounds like something that neither side can really fix, but if I’m wrong and any devs would like a core file, I can provide one.



[1] 
http://www.postgresql.org/message-id/camflbnhq6641ymbij2-7ozksgmgfne5v3ggfkvyxojy8umr...@mail.gmail.com



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Achilleas Mantzios



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[GENERAL] Bus error in libxml2 in postgresql 9.2.x on FreeBSD

[Steve McCoy]

 Hello,

I found some semi-recent messages related to this in 9.0.x, but wanted to
confirm for anybody searching that the same issue exists in 9.2.x. It
crashes for me with a similar backtrace as [Laurentius Purba’s][1]. The
same fix/workaround applies as well: Compile libxml2 without the “threads”
option.

If I’m understanding the explanations correctly, the issue is that
libxml2+threads expects something to be initialized by the calling program
(postgres), but since the program isn’t multithreaded, this doesn’t happen.
It sounds like something that neither side can really fix, but if I’m wrong
and any devs would like a core file, I can provide one.


[1]
http://www.postgresql.org/message-id/camflbnhq6641ymbij2-7ozksgmgfne5v3ggfkvyxojy8umr...@mail.gmail.com