Taken over from <URL:http://sourceware.org/bugzilla/show_bug.cgi?id=342> since the example program also doesn't work as expected with our libpthread:

#v+
$ gcc -g -Wall -o pthread_cond_destroy -lpthread -lrt pthread_cond_destroy.c
$ ./pthread_cond_destroy
[10:11:45]Test starting
[10:11:45]System abilities:
[10:11:45] TPS : -1
[10:11:45] CS  : -1
[10:11:45] MON : -1
[10:11:45] MF  : 200112
[10:11:45]Process-shared attributes won't be tested
[10:11:45]Alternative clock won't be tested
[10:11:45]Temp file created (/tmp/cond_destroy-dMmcXx).
[10:11:45]Testdata allocated in shared memory (108b).
[10:11:45][parent] Starting 1st pass of test Default mutex
[10:11:45][parent] All children are running
[10:11:45][parent] All children are waiting
[10:11:45][parent] Condition was broadcasted, and condvar destroyed.
[10:13:45]Test pthread_cond_destroy.c FAILED: Test failed (hang)
#v-

Debian hurd-20050513-6 and libc0.3-2.3.6-3 packages.