[RTEMS Project] #3142: POSIX: Reduce size of pthread_once_t and make it llow zero-initialized

[RTEMS trac]

#3142: POSIX: Reduce size of pthread_once_t and make it llow zero-initialized
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 Reporter:  Sebastian Huber  |      Owner:  Sebastian Huber
     Type:  enhancement      |     Status:  assigned
 Priority:  normal           |  Milestone:  4.12.0
Component:  cpukit           |    Version:  4.12
 Severity:  normal           |   Keywords:
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 A zero-initialized pthread_once_t reduces the ROM usage of RTEMS
 applications, since the global pthread_once_t objects may reside in the
 BSS section.

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Ticket URL: <http://devel.rtems.org/ticket/3142>
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