From cd1e14b1da0578aef1566e48b092a84b846372a6 Mon Sep 17 00:00:00 2001
From: Ferenc Arn <tagcup@yahoo.com>
Date: Wed, 14 Jun 2017 10:11:53 -0500
Subject: [PATCH] Use inline code for isinf as a workaround for libstdc++
 versions from gcc 5.x era.

Fixes #9166.
---
 core/math/math_funcs.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h
index dd64b10f881..45509a08082 100644
--- a/core/math/math_funcs.h
+++ b/core/math/math_funcs.h
@@ -110,8 +110,8 @@ public:
 	static _ALWAYS_INLINE_ bool is_inf(double p_val) {
 #ifdef _MSC_VER
 		return !_finite(p_val);
-// workaround for mingw builds on travis
-#elif defined(__MINGW32__) || defined(__MINGW64__)
+// use an inline implementation of isinf as a workaround for problematic libstdc++ versions from gcc 5.x era
+#elif defined(__GNUC__) && __GNUC__ < 6
 		union {
 			uint64_t u;
 			double f;
@@ -127,8 +127,8 @@ public:
 	static _ALWAYS_INLINE_ bool is_inf(float p_val) {
 #ifdef _MSC_VER
 		return !_finite(p_val);
-// workaround for mingw builds on travis
-#elif defined(__MINGW32__) || defined(__MINGW64__)
+// use an inline implementation of isinf as a workaround for problematic libstdc++ versions from gcc 5.x era
+#elif defined(__GNUC__) && __GNUC__ < 6
 		union {
 			uint32_t u;
 			float f;