From 9215c854502da336efe8ece755450478f320349f Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 18 Feb 2019 17:21:08 +0900
Subject: Parenthesize expression to suppress warning; ref #4278

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

diff --git a/src/symbol.c b/src/symbol.c
index 8424cecd9..87c4ca11e 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -80,7 +80,7 @@ sym_inline_unpack(mrb_sym sym, char *buf, mrb_int *lenp)
   mrb_assert(sym&1);
 
   for (i=0; i<30/bit_per_char; i++) {
-    uint32_t bits = sym>>(i*bit_per_char+2) & (1<<bit_per_char)-1;
+    uint32_t bits = sym>>(i*bit_per_char+2) & ((1<<bit_per_char)-1);
     if (bits == 0) break;
     buf[i] = pack_table[bits-1];;
   }
-- 
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