numeric.c: Bignum 0 is not positive

* numeric.c (num_positive_p): should false on Bignum 0.
  http://twitter.com/rafaelfranca/status/600509783427391488
  [ruby-core:69173] [Feature #11151]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50538 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/numeric.c b/numeric.c
index e2f330f3bc..0620442bae 100644
--- a/numeric.c
+++ b/numeric.c
@@ -666,7 +666,7 @@ num_positive_p(VALUE num)
     }
     else if (RB_TYPE_P(num, T_BIGNUM)) {
 	if (method_basic_p(rb_cBignum))
-	    return BIGNUM_POSITIVE_P(num);
+	    return BIGNUM_POSITIVE_P(num) && !rb_bigzero_p(num);
     }
     return RTEST(compare_with_zero(num, mid));
 }