CVS commit: src/lib/libpthread

["Andrew Doran" <ad%netbsd.org@localhost>]

Module Name:    src
Committed By:   ad
Date:           Sun Jun 14 21:33:28 UTC 2020

Modified Files:
        src/lib/libpthread: pthread_cond.c

Log Message:
Another bug.  The CAS loop in pthread_cond_signal() could race against the
thread it is trying to awake.  The thread could exit the condvar and then
reinsert itself at the head of the list with a new waiter behind it.  It's
likely possible to fix this in a way that's wait-free but for now just fix
the bug.


To generate a diff of this commit:
cvs rdiff -u -r1.75 -r1.76 src/lib/libpthread/pthread_cond.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.