1 files changed, 11 insertions, 9 deletions

diff --git a/signal.c b/signal.c
index 6c4028e789..f02e3db15c 100644
--- a/signal.c
+++ b/signal.c
@@ -554,16 +554,18 @@ rb_get_next_signal(void)
 {
     int i, sig = 0;
 
-    for (i=1; i<RUBY_NSIG; i++) {
-	if (signal_buff.cnt[i] > 0) {
-	    rb_disable_interrupt();
-	    {
-		ATOMIC_DEC(signal_buff.cnt[i]);
-		ATOMIC_DEC(signal_buff.size);
+    if (signal_buff.size != 0) {
+	for (i=1; i<RUBY_NSIG; i++) {
+	    if (signal_buff.cnt[i] > 0) {
+		rb_disable_interrupt();
+		{
+		    ATOMIC_DEC(signal_buff.cnt[i]);
+		    ATOMIC_DEC(signal_buff.size);
+		}
+		rb_enable_interrupt();
+		sig = i;
+		break;
 	    }
-	    rb_enable_interrupt();
-	    sig = i;
-	    break;
 	}
     }
     return sig;