From 90add5db4515dd5f2c1267edcd821c6e370559db Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 27 Nov 2008 16:01:54 +0000
Subject: [PATCH] * numeric.c (flodivmod): floating point division should raise
   ZeroDivisionError as integer division. [incompatible]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20381 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog               | 5 +++++
 numeric.c               | 1 +
 test/ruby/test_float.rb | 4 +---
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index cbdf67c8cf..08739594b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Nov 28 00:12:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* numeric.c (flodivmod): floating point division should raise
+	  ZeroDivisionError as integer division. [incompatible]
+
 Thu Nov 27 23:54:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* gc.c (gc_mark): still needs to check stack depth during GC.
diff --git a/numeric.c b/numeric.c
index c2f5e60c16..29497b0648 100644
--- a/numeric.c
+++ b/numeric.c
@@ -678,6 +678,7 @@ flodivmod(double x, double y, double *divp, double *modp)
 {
     double div, mod;
 
+    if (y == 0.0) rb_num_zerodiv();
 #ifdef HAVE_FMOD
     mod = fmod(x, y);
 #else
diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb
index 5d7bbb178b..e3ceaed6ad 100644
--- a/test/ruby/test_float.rb
+++ b/test/ruby/test_float.rb
@@ -172,9 +172,7 @@ class TestFloat < Test::Unit::TestCase
     assert_raise(TypeError) { 2.0.divmod(nil) }
 
     inf = 1.0 / 0.0
-    a, b = inf.divmod(0)
-    assert(a.infinite?)
-    assert(b.nan?)
+    assert_raise(ZeroDivisionError) {inf.divmod(0)}
 
     a, b = (2.0**32).divmod(1.0)
     assert_equal(2**32, a)