From 5900b29fb47f443287228f0b37bb60403758120c Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Tue, 30 Jul 2019 23:13:30 +0900
Subject: Fixed integer overflow in `lshift`.

---
 src/numeric.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/numeric.c')

diff --git a/src/numeric.c b/src/numeric.c
index a1299a74f..db851b06a 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -1119,7 +1119,7 @@ lshift(mrb_state *mrb, mrb_int val, mrb_int width)
   }
   else {
     if ((width > NUMERIC_SHIFT_WIDTH_MAX) ||
-        (val   < (MRB_INT_MIN >> width))) {
+        (val   <= (MRB_INT_MIN >> width))) {
 #ifdef MRB_WITHOUT_FLOAT
       return mrb_fixnum_value(0);
 #else
-- 
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