Defect in XSH pthread_attr_getscope()

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        Defect report from : Ulrich Drepper , Red Hat

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@ page 991 line 31490 section pthread_attr_getscope() objection {ptattr-3}

Problem:

Defect code :  2. Omission

The standard does not mention anywhere the default value of the value retrieved 
via pthread_attr_getscope() after a call to
pthread_attr_init().

The pthread_attr_getguardsize() man page does contain the appropriate 
information.

I don't know what the default value should be.  If I would have to pick I'd 
chose PTHREAD_SCOPE_SYSTEM.

Action:

Add new paragraph after line 31490 either:

  The default value of the /contentionscope/ attribute is 
<t>PTHREAD_SCOPE_SYSTEM<t>


or

  The default value of the /contentionscope/ attribute is 
<t>PTHREAD_SCOPE_PROCESS<t>