From a0c67155a0ef28e02823048e74a5f59e556a22d9 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 23 Oct 2013 16:34:22 +0000
Subject: [PATCH] win32.h: suppress INFINITY warnings

* include/ruby/win32.h (rb_infinity_float): suppress overflow in
  constant arithmetic warnings.  [ruby-core:57981] [Bug #9044]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43408 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog            |  5 +++++
 include/ruby/win32.h | 14 ++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 3fb941d818..e0cba8eb81 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Oct 24 01:34:12 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/win32.h (rb_infinity_float): suppress overflow in
+	  constant arithmetic warnings.  [ruby-core:57981] [Bug #9044]
+
 Thu Oct 24 00:11:24 2013  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
 
 	* lib/ostruct.rb: raise NoMethodError with a #name and #args.
diff --git a/include/ruby/win32.h b/include/ruby/win32.h
index 979e73b2d3..96b2f3f8a2 100644
--- a/include/ruby/win32.h
+++ b/include/ruby/win32.h
@@ -355,6 +355,20 @@ extern FILE *rb_w32_fsopen(const char *, const char *, int);
 #endif
 
 #include <float.h>
+
+#if defined _MSC_VER && _MSC_VER >= 1800 && defined INFINITY
+#pragma warning(push)
+#pragma warning(disable:4756)
+static inline float
+rb_infinity_float(void)
+{
+    return INFINITY;
+}
+#pragma warning(pop)
+#undef INFINITY
+#define INFINITY rb_infinity_float()
+#endif
+
 #if !defined __MINGW32__ || defined __NO_ISOCEXT
 #ifndef isnan
 #define isnan(x) _isnan(x)