Re: fix for libpthread

Quoting Alfred Perlstein <alfred_at_freebsd.org>:

> * Alfred Perlstein <alfred_at_freebsd.org> [040303 02:46] wrote:
>> * David Xu <davidxu_at_freebsd.org> [040303 00:09] wrote:
>> > Alfred Perlstein wrote:
>> > > >This assertion doesn't seem necessary.  Apply to > 
>> >src/lib/libpthread/thread/thr_spinlock.c
>> > >
>> > As I saw some reports in the -CURRENT list,  the panic is always > 
>> triggered by mix up
>> > of libc_r and libpthread in same program. So to avoid other 
>> mysterious > crashes,
>> > I'd like keep the code there, it is now used to check the problem.
>>
>> Can you clarify?  Without this patch mplayer refuses to work for
>> me and crashes at startup.  With the patch it runs just fine.
>>
>> Is there a workaround?

I've been forced to compile a couple of ports by using CFLAGS+=-pthread in my
/etc/make.conf and it has solved the problem with them.  net/openldap22-server
is an example.  Under normal conditions, I have it commented out.

ed

>
> I sort of see what you are saying:
> ~ % ldd `which mplayer`
> /usr/local/bin/mplayer:
>         libpng.so.5 => /usr/local/lib/libpng.so.5 (0x2828e000)
>         libz.so.2 => /lib/libz.so.2 (0x282b0000)
>         libfreetype.so.9 => /usr/local/lib/libfreetype.so.9 (0x282bd000)
>         libncurses.so.5 => /lib/libncurses.so.5 (0x28320000)
>         libGL.so.1 => /usr/X11R6/lib/libGL.so.1 (0x2835c000)
>         libXv.so.1 => /usr/X11R6/lib/libXv.so.1 (0x283c9000)
>         libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x283ce000)
>         libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x283dd000)
>         libpthread.so.1 => /usr/lib/libpthread.so.1 (0x284a5000)
>         libiconv.so.3 => /usr/local/lib/libiconv.so.3 (0x284c8000)
>         libintl.so.6 => /usr/local/lib/libintl.so.6 (0x285b7000)
>         libm.so.2 => /lib/libm.so.2 (0x285bf000)
>         libc.so.5 => /lib/libc.so.5 (0x285d7000)
>         libc_r.so.5 => /usr/lib/libc_r.so.5 (0x286a2000)
>
> I see somehow it got linked against BOTH libpthread and libc_r,
> there has to be a way to prevent that sort of bogus linkage
> from happening. :(  Or at least make it work right when it
> does happen...
>
> --
> - Alfred Perlstein
> - Research Engineering Development Inc.
> - email: bright_at_mu.org cell: 408-480-4684
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