From 287a0388942ec5a99e12b6331e07798b117e289b Mon Sep 17 00:00:00 2001
From: Scott Ehlert <ds@alliedmods.net>
Date: Mon, 10 Mar 2014 22:36:34 -0500
Subject: [PATCH] Re-enable __restrict modifier for GCC, Clang 3.4, or Apple
 Clang 5.1.

---
 public/tier0/platform.h | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/public/tier0/platform.h b/public/tier0/platform.h
index 6de637e8..8d6ce1b1 100644
--- a/public/tier0/platform.h
+++ b/public/tier0/platform.h
@@ -229,6 +229,10 @@ typedef double				float64;
 // for when we don't care about how many bits we use
 typedef unsigned int		uint;
 
+#if defined(__clang__)
+#define CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
+#endif
+
 #ifdef _MSC_VER
 #pragma once
 // Ensure that everybody has the right compiler version installed. The version
@@ -500,7 +504,12 @@ typedef void * HINSTANCE;
 	#define FMTFUNCTION( a, b )
 #elif defined(GNUC)
 	#define SELECTANY __attribute__((weak))
-	#define RESTRICT
+	// Versions of clang older than 3.4 or Apple's 5.1 mangle member function names with the __restrict modifier in a GCC-incompatible way
+	#if ( defined(LINUX) && !defined(DEDICATED) ) || ( defined(__clang__) && ( ( defined(__apple_build_version__) && CLANG_VERSION < 501 ) || CLANG_VERSION < 304 ) )	
+		#define RESTRICT
+	#else
+		#define RESTRICT __restrict
+	#endif
 	#define RESTRICT_FUNC
 	// squirrel.h does a #define printf DevMsg which leads to warnings when we try
 	// to use printf as the prototype format function. Using __printf__ instead.