pthread crash on master

[Greg Troxel]

(Thansk - now I can build master and branch-release_18.)

1.8 passes make check.  master fails with a core dump due to mutex abuse
in the socket test:

  http://autobuild.josefsson.org/guile/log-200901151131125464000.txt

here is a backtrace of the thread that crashed

(gdb) i thr
  4 process 69671  0x00007f7ffd7337ba in _lwp_park () from /usr/lib/libc.so.12
  3 process 135207  0x00007f7ffd732cfa in read () from /usr/lib/libc.so.12
  2 process 200743  0x00007f7ffd732e9a in kill () from /usr/lib/libc.so.12
* 1 process 266279  0x00007f7ffd7337ba in _lwp_park () from /usr/lib/libc.so.12
(gdb) thr 2
[Switching to thread 2 (process 200743)]#0  0x00007f7ffd732e9a in kill () from 
/usr/lib/libc.so.12
(gdb) bt
#0  0x00007f7ffd732e9a in kill () from /usr/lib/libc.so.12
#1  0x00007f7ffcd0a754 in pthread__errorfunc () from /usr/lib/libpthread.so.0
#2  0x00007f7ffcd08787 in pthread_mutex_init () from /usr/lib/libpthread.so.0
#3  0x00007f7ffdc928b5 in scm_leave_guile () at threads.c:433
#4  0x00007f7ffcd0ad76 in pthread_exit () from /usr/lib/libpthread.so.0
#5  0x00007f7ffcd0aebb in pthread__cancelled () from /usr/lib/libpthread.so.0
#6  0x00007f7ffcd096f0 in pthread_cond_wait () from /usr/lib/libpthread.so.0
#7  0x00007f7ffdc92962 in scm_pthread_cond_wait (cond=0x7f7ffcc01568, 
mutex=0x7f7ffbce8430) at threads.c:1832
#8  0x00007f7ffdc92e82 in block_self (queue=<value optimized out>, 
sleep_object=<value optimized out>, mutex=0x7f7ffbce8430, 
    waittime=0x0) at threads.c:264
#9  0x00007f7ffdc93c12 in fat_mutex_unlock (mutex=0x7f7ffc823ee0, 
cond=0x7f7ffc823bc0, waittime=0x0, relock=1)
    at threads.c:1462
#10 0x00007f7ffdc93d9e in scm_timed_wait_condition_variable (cv=0x7f7ffc823bc0, 
mx=0x7f7ffc823ee0, t=0x204) at threads.c:1656
#11 0x00007f7ffdc41d7e in ceval (x=<value optimized out>, env=0x7f7ffc82cf30) 
at eval.i.c:1360
#12 0x00007f7ffdc3f7f3 in scm_apply (proc=0x7f7ffc77e980, arg1=<value optimized 
out>, args=<value optimized out>)
    at eval.i.c:1854
#13 0x00007f7ffdc95339 in scm_c_catch (tag=0x104, body=0x7f7ffdc94e10 
<scm_body_thunk>, body_data=0x7f7ff7fffa60, 
    handler=0x7f7ffdc94e00 <scm_handle_by_proc>, handler_data=0x7f7ff7fffa58, 
pre_unwind_handler=0, 
    pre_unwind_handler_data=0x7f7ff7fffa50) at throw.c:207
#14 0x00007f7ffdc95447 in scm_catch_with_pre_unwind_handler (key=0x1027, 
thunk=<value optimized out>, handler=0x7f7ffc77c8a0, 
    pre_unwind_handler=0x204) at throw.c:591
#15 0x00007f7ffdc9433b in really_launch (d=<value optimized out>) at 
threads.c:891
#16 0x00007f7ffdc3507a in c_body (d=0x7f7ff7fffc30) at continuations.c:349
#17 0x00007f7ffdc95339 in scm_c_catch (tag=0x104, body=0x7f7ffdc35070 <c_body>, 
body_data=0x7f7ff7fffc30, 
    handler=0x7f7ffdc35090 <c_handler>, handler_data=0x7f7ff7fffc30, 
    pre_unwind_handler=0x7f7ffdc94d20 <scm_handle_by_message_noexit>, 
pre_unwind_handler_data=0x0) at throw.c:207
#18 0x00007f7ffdc35431 in scm_i_with_continuation_barrier (body=0x7f7ffdc35070 
<c_body>, body_data=0x7f7ff7fffc30, 
    handler=0x7f7ffdc35090 <c_handler>, handler_data=0x7f7ff7fffc30, 
    pre_unwind_handler=0x7f7ffdc94d20 <scm_handle_by_message_noexit>, 
pre_unwind_handler_data=0x0) at continuations.c:325
#19 0x00007f7ffdc354d0 in scm_c_with_continuation_barrier (func=<value 
optimized out>, data=<value optimized out>)
    at continuations.c:367
#20 0x00007f7ffdc943f2 in scm_i_with_guile_and_parent (func=0x7f7ffdc942c0 
<really_launch>, data=0x7f7fffffc6a0, 
    parent=0x7f7ffcc55340) at threads.c:842
#21 0x00007f7ffdc944e3 in launch_thread (d=0x7f7fffffc6a0) at threads.c:901
#22 0x00007f7ffcd0b662 in pthread_create () from /usr/lib/libpthread.so.0
#23 0x00007f7ffd753bd0 in swapcontext () from /usr/lib/libc.so.12
#24 0x00007f7ff8000000 in ?? ()
#25 0x0000000111110001 in ?? ()
#26 0x0000000033330003 in ?? ()
#27 0x0000000000000000 in ?? ()

pgpfT_tBxZRRy.pgp
Description: PGP signature