fix overflow in #i_gcd

jruby · Nov 12, 2018 · 5c3c90c · 5c3c90c
1 parent 0d06c0f
commit 5c3c90c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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);