Enable check for pending signals after calling a signal handler.

Restoration of a threads signal mask after invocation of a signal
handler may allow pending signals to become deliverable.

PR:		23647

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/libpthread/thread/thr_kern.c b/lib/libpthread/thread/thr_kern.c
index 01faece..6f4bb6e 100644
--- a/lib/libpthread/thread/thr_kern.c
+++ b/lib/libpthread/thread/thr_kern.c
@@ -90,6 +90,9 @@ _thread_kern_sched_frame(struct pthread_signal_frame *psf)
 	/* Restore the signal frame: */
 	_thread_sigframe_restore(_thread_run, psf);
 
+	/* The signal mask was restored; check for any pending signals: */
+	_thread_run->check_pending = 1;
+
 	/* Switch to the thread scheduler: */
 	___longjmp(_thread_kern_sched_jb, 1);
 }