[Xen-devel] core dump in pthread in mplayer in freebsd DomainU on Debian Linux Domain0

[lepton <ytht.net@xxxxxxxxx>]

Hi!
        After I have installed freebsd port for xen, I tried some
        software on freebsd. I am a newbie of freebsd, I meet some
        problems in mplayer, I don't know wether the problem was a
        freebsd-xen "bug" or a freebsd "bug".

        When I compiled mplayer, it complained about pthread about
        "Fatal error 'Thread has returned from _thread_switch' at line
        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
        0)", it won't compile.

        Then I moved to use port to compile mplayer, then it can
        compile. I can use mplayer to play video without sound. But
        after I have configured mplayer to use nas to output sound.
        When I use mplayer, it will abort, and complain about 
         "Fatal error 'Thread has returned from _thread_switch' at line
        1116 in file /usr/src/lib/libpthread/thread/thr_kern.c (errno =
        0)"

        I have tried the following program (paste from configure script
        of mplayer)

        #include <pthread.h>
        void* func(void *arg) { return arg; }
        int main(void) { pthread_t tid; return pthread_create (&tid, 0,
        func, 0) == 0 ? 0 : 1; }

        when you use gcc -o test test.c -pthread
        it will complain the same thing about pthread.

        when you use gcc -o test test.c -lc_r, the problem dispeared.

        Is pthread is broken on freebsd? or freebsd-xen? or I have do
        something wrong?


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