[Bug 1615] New: _POSIX_Keys_Run_destructors() is broken

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1615

           Summary: _POSIX_Keys_Run_destructors() is broken
           Product: RTEMS
           Version: 4.10
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: cpukit
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: sebastian.huber at embedded-brains.de


Created an attachment (id=882)
 --> (https://www.rtems.org/bugzilla/attachment.cgi?id=882)
Patch.

Problem 1:

According to The Open Group we have:

At thread exit, if a key value has a non-NULL destructor pointer, and the
thread has a non-NULL value associated with that key, the value of the key is
set to NULL, and then the function pointed to is called with the previously
associated value as its sole argument.

The current implementation does not set the value to NULL before calling the
destructor and thus calls it multiple times with the same value.

Problem 2:

The current implementation stops the iteration after some time.  This may lead
to resource leaks.  If continuous iterations produce an infinite loop this is
better than the silent error suppression.

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