numeric.c: use NUM2DBL

* numeric.c (fix_fdiv_double), bignum.c (rb_big_fdiv_double): use
  NUM2DBL on unknown object.  RFLOAT_VALUE is only appliicable to
  T_FLOAT object.  [ruby-core:82924] [Bug #13928]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59986 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 19 insertions, 0 deletions

diff --git a/test/ruby/test_bignum.rb b/test/ruby/test_bignum.rb
index e680d28735..3ead77766d 100644
--- a/test/ruby/test_bignum.rb
+++ b/test/ruby/test_bignum.rb
@@ -693,6 +693,10 @@ class TestBignum < Test::Unit::TestCase
     o = Object.new
     def o.coerce(x); [x, 2**100]; end
     assert_equal((2**200).to_f, (2**300).fdiv(o))
+    o = Object.new
+    def o.coerce(x); [self, x]; end
+    def o.fdiv(x); 1; end
+    assert_equal(1.0, (2**300).fdiv(o))
   end
 
   def test_singleton_method
diff --git a/test/ruby/test_integer.rb b/test/ruby/test_integer.rb
index 9199bc0877..1b485760e3 100644
--- a/test/ruby/test_integer.rb
+++ b/test/ruby/test_integer.rb
@@ -510,4 +510,19 @@ class TestInteger < Test::Unit::TestCase
     end
     assert_empty(failures, bug13440)
   end
+
+  def test_fdiv
+    assert_equal(1.0, 1.fdiv(1))
+    assert_equal(0.5, 1.fdiv(2))
+  end
+
+  def test_obj_fdiv
+    o = Object.new
+    def o.coerce(x); [x, 0.5]; end
+    assert_equal(2.0, 1.fdiv(o))
+    o = Object.new
+    def o.coerce(x); [self, x]; end
+    def o.fdiv(x); 1; end
+    assert_equal(1.0, 1.fdiv(o))
+  end
 end