1 files changed, 14 insertions, 0 deletions
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)