From f4b01ed19ed8e61d0477b2dea0c4b987e133da45 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 21 May 2025 10:40:02 +0900
Subject: [PATCH] mruby-rational (int_lshift): exponential may be bigger than
 int bits

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

diff --git a/mrbgems/mruby-rational/src/rational.c b/mrbgems/mruby-rational/src/rational.c
index d15af73ce..9b2651c33 100644
--- a/mrbgems/mruby-rational/src/rational.c
+++ b/mrbgems/mruby-rational/src/rational.c
@@ -311,7 +311,7 @@ int_lshift(mrb_state *mrb, mrb_value v, mrb_int n)
 {
   if (mrb_integer_p(v)) {
     mrb_float f = (mrb_float)mrb_integer(v);
-    f *= 1<<n;
+    f *= 1L<<n;
     if (mrb_int_fit_p(f, mrb_float))
       return mrb_int_value(mrb, (mrb_int)f);
   }