From e6380c793b16421282bdd089dbaee801c37c1b97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Sat, 2 May 2015 18:26:27 +0200
Subject: [PATCH] GCC 4.4 compatibility: explicit std::reference_wrapper
 constructor.

Affected only tests on ES builds. Thanks, Jenkins.
---
 src/Magnum/Test/PrimitiveQueryGLTest.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/Test/PrimitiveQueryGLTest.cpp b/src/Magnum/Test/PrimitiveQueryGLTest.cpp
index 7b3f45d7e..5e9c4eee2 100644
--- a/src/Magnum/Test/PrimitiveQueryGLTest.cpp
+++ b/src/Magnum/Test/PrimitiveQueryGLTest.cpp
@@ -130,7 +130,8 @@ void PrimitiveQueryGLTest::transformFeedbackPrimitivesWritten() {
             #else
             /* ES for some reason needs both vertex and fragment shader */
             CORRADE_INTERNAL_ASSERT_OUTPUT(frag.addSource("void main() {}\n").compile());
-            attachShaders({vert, frag});
+            /* GCC 4.4 has explicit std::reference_wrapper constructor */
+            attachShaders({std::ref(vert), std::ref(frag)});
             #endif
 
             setTransformFeedbackOutputs({"outputData"}, TransformFeedbackBufferMode::SeparateAttributes);