From d986500059e8cacbe179a883d114b29787ca6628 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 14 Apr 2011 12:21:09 +0000
Subject: * include/ruby/win32.h (frexp, modf): wrongly declared as pure in  
 mingw math.h.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 include/ruby/win32.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'include/ruby')

diff --git a/include/ruby/win32.h b/include/ruby/win32.h
index cafd7de85f..22c35e6a95 100644
--- a/include/ruby/win32.h
+++ b/include/ruby/win32.h
@@ -692,6 +692,20 @@ uintptr_t rb_w32_asynchronize(asynchronous_func_t func, uintptr_t self, int argc
 #pragma GCC visibility pop
 #endif
 
+#ifdef __MINGW_ATTRIB_PURE
+/* get rid of bugs in math.h of mingw */
+#define frexp(_X, _Y) __extension__ ({\
+    int *intptr_frexp_bug = (_Y);\
+    *intptr_frexp_bug = *intptr_frexp_bug;\
+    frexp((_X), intptr_frexp_bug);\
+})
+#define modf(_X, _Y) __extension__ ({\
+    double *intptr_modf_bug = (_Y);\
+    *intptr_modf_bug = *intptr_modf_bug;\
+    modf((_X), intptr_modf_bug);\
+})
+#endif
+
 #if defined(__cplusplus)
 #if 0
 { /* satisfy cc-mode */
-- 
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