From 9db828953a1047c95bf5fb780c3c1f9453f806eb Mon Sep 17 00:00:00 2001
From: Andreas Schuh <andreas.schuh.84@gmail.com>
Date: Wed, 28 Oct 2015 00:19:33 +0000
Subject: [PATCH] #125 Fix unused typedef/variable warning for static assertion

---
 src/util.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/util.h b/src/util.h
index 366e1be..fb59b38 100644
--- a/src/util.h
+++ b/src/util.h
@@ -88,9 +88,10 @@ typedef unsigned char uint8;
 
 // -- utility macros ---------------------------------------------------------
 
-template <bool> struct CompileAssert {};
+template <bool b> struct CompileAssert;
+template <> struct CompileAssert<true> {};
 #define COMPILE_ASSERT(expr, msg) \
-  typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
+  enum { assert_##msg = sizeof(CompileAssert<bool(expr)>) }
 
 // Returns the number of elements in an array.
 #define arraysize(arr) (sizeof(arr)/sizeof(*(arr)))