bignum.c: suppress warning

* bignum.c (rb_big_mul_karatsuba): suppress logical-op-parentheses
  warning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42470 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/bignum.c b/bignum.c
index 7a73a5c8e2..8105460da5 100644
--- a/bignum.c
+++ b/bignum.c
@@ -2006,7 +2006,7 @@ rb_big_mul_karatsuba(VALUE x, VALUE y)
 {
     size_t xn = RBIGNUM_LEN(x), yn = RBIGNUM_LEN(y), zn = xn + yn;
     VALUE z = bignew(zn, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
-    if (!(xn <= yn && yn < 2 || KARATSUBA_BALANCED(xn, yn)))
+    if (!((xn <= yn && yn < 2) || KARATSUBA_BALANCED(xn, yn)))
         rb_raise(rb_eArgError, "unexpected bignum length for karatsuba");
     bary_mul_karatsuba(BDIGITS(z), zn, BDIGITS(x), xn, BDIGITS(y), yn, NULL, 0);
     RB_GC_GUARD(x);