[Bug linuxthreads/18710] New: pthread_join() causes SIGSEGV if thread == 0

["Ulrich.Windl at rz dot uni-regensburg.de" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18710

            Bug ID: 18710
           Summary: pthread_join() causes SIGSEGV if thread == 0
           Product: glibc
           Version: 2.11
            Status: NEW
          Severity: critical
          Priority: P2
         Component: linuxthreads
          Assignee: unassigned at sourceware dot org
          Reporter: Ulrich.Windl at rz dot uni-regensburg.de
                CC: drow at false dot org
  Target Milestone: ---

When a program tries to join a thread that is 0, the application gets SIGSEVG
within pthread_join(). According to the manual page this is not a documented
feature. Expectation is EINVAL or a similar error code instead.

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