From 5c3c90c064aa52c83637aa7b5fb49411b89a51e6 Mon Sep 17 00:00:00 2001
From: pavel <pavel.rosicky@easy.cz>
Date: Mon, 12 Nov 2018 23:25:45 +0100
Subject: [PATCH] fix overflow in #i_gcd

---
 core/src/main/java/org/jruby/util/Numeric.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/src/main/java/org/jruby/util/Numeric.java b/core/src/main/java/org/jruby/util/Numeric.java
index 3cf25a184b3..5111fb06d84 100644
--- a/core/src/main/java/org/jruby/util/Numeric.java
+++ b/core/src/main/java/org/jruby/util/Numeric.java
@@ -514,10 +514,10 @@ public static long i_gcd(long x, long y) {
         if (x == Long.MIN_VALUE) {
             if (y == Long.MIN_VALUE)
                 return x;
-            return 1 << Long.numberOfTrailingZeros(Math.abs(y));
+            return 1L << Long.numberOfTrailingZeros(Math.abs(y));
         }
         if (y == Long.MIN_VALUE) {
-            return 1 << Long.numberOfTrailingZeros(Math.abs(x));
+            return 1L << Long.numberOfTrailingZeros(Math.abs(x));
         }
 
         x = Math.abs(x);