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* clean up pthread_sigmask/sigprocmask dependency orderRich Felker2011-07-301-3/+3
| | | | | | it's nicer for the function that doesn't use errno to be independent, and have the other one call it. saves some time and avoids clobbering errno.
* fix error handling for pthread_sigmaskRich Felker2011-03-091-0/+10
it must return errno, not -1, and should reject invalud values for how.