Unexpected EINVAL from pthread_join

Lasse Collin lasse.collin@tukaani.org
Mon Feb 23 03:32:00 GMT 2015

It seems that a signal can cause pthread_join to incorrectly return
EINVAL. I debugged it only a little but hopefully someone finds this

In the file thread.cc, function pthread::join, the call to cygwait may
return WAIT_SIGNALED if a signal is sent to the process. The switch
statement handling the return value assumes that only WAIT_OBJECT_0 and
WAIT_CANCELED are possible. The default section of the switch statement
has a comment "should never happen" and it returns EINVAL. It might be
that the problem occurs only when SA_RESTART isn't used.

Lasse Collin  |  IRC: Larhzu @ IRCnet & Freenode

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