From 3567b262227c6188da21bac2896eea4587bd1de5 Mon Sep 17 00:00:00 2001 From: "Yukihiro \"Matz\" Matsumoto" Date: Fri, 21 Apr 2017 08:36:29 +0900 Subject: Bit-shifting zero should be zero; ref #3620 --- src/numeric.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/numeric.c') diff --git a/src/numeric.c b/src/numeric.c index 2117fcc3c..b4b85a9c6 100644 --- a/src/numeric.c +++ b/src/numeric.c @@ -995,6 +995,7 @@ fix_lshift(mrb_state *mrb, mrb_value x) return x; } val = mrb_fixnum(x); + if (val == 0) return x; if (width < 0) { return rshift(val, -width); } @@ -1019,6 +1020,7 @@ fix_rshift(mrb_state *mrb, mrb_value x) return x; } val = mrb_fixnum(x); + if (val == 0) return x; if (width < 0) { return lshift(mrb, val, -width); } -- cgit v1.2.3