[Bug linuxthreads/6508] New: Problem with mutexes and semaphores

["bugreport at netmasters dot cz" <sourceware-bugzilla at sourceware dot org>]

I'm migrating from NON-NPTL to NPTL and my software don't work.

When one thread call pthread_mutex_lock(&action_mutex) and another thread call 
pthread_mutex_unlock(&action_mutex), waiting thread don't wake up. 

At http://www.netmasters.cz/nptl.c is testing code, which work well only at NON-
NPTL systems. 

Tested systems:
Slackware 10.1 - NON-NPTL - PASSED
Slackware 10.2 - NON-NPTL - PASSED
Slackware 12.0 - NPTL - FAILED
Fedore 8 X64 - NPTL - Failed


NPTL Output:
Starting thread 2:
After lock 2
Starting thread 3:
After lock 2
After lock 2
After lock 2
After lock 2

NON-NPTL Output:
Starting thread 2:
After lock 2
Starting thread 3:
After lock  3
After lock 2
After lock  3
After lock 2
After lock  3

-- 
           Summary: Problem with mutexes and semaphores
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: linuxthreads
        AssignedTo: drow at false dot org
        ReportedBy: bugreport at netmasters dot cz
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6508

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