X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fpthread_sigmask.c;h=349f7ad5c26bb8aa39f37f749278cee020a92670;hb=a046525c54d375ff2b3d9d0f8c78f5c779ce4f99;hp=06ee7fc42042bf09d061db6c2caa76e593ad6225;hpb=43243b5fdcf1e0c0e016cabe190f1ab29b984871;p=gnulib.git

diff --git a/lib/pthread_sigmask.c b/lib/pthread_sigmask.c
index 06ee7fc42..349f7ad5c 100644
--- a/lib/pthread_sigmask.c
+++ b/lib/pthread_sigmask.c
@@ -47,6 +47,16 @@ pthread_sigmask (int how, const sigset_t *new_mask, sigset_t *old_mask)
   if (ret == -1)
     return errno;
 # endif
+# if PTHREAD_SIGMASK_UNBLOCK_BUG
+  if (ret == 0
+      && new_mask != NULL
+      && (how == SIG_UNBLOCK || how == SIG_SETMASK))
+    {
+      /* Give the OS the opportunity to raise signals that were pending before
+         the pthread_sigmask call and have now been unblocked.  */
+      usleep (1);
+    }
+# endif
   return ret;
 #else
   int ret = sigprocmask (how, new_mask, old_mask);