From 9212727813e808de8c136e26b113f8ed0e704e94 Mon Sep 17 00:00:00 2001
From: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
Date: Fri, 5 Feb 2016 10:45:20 -0800
Subject: QOpenGLExtensionMatcher: Fix possible use of unintialized memory

Some drivers don't support GL_NUM_EXTENSIONS, so we may be reading
random bits from numExtensions.

Change-Id: Ibe61fa6d7c379f3f1428458edd3e0ddba0eb04d7
Task-number: QTBUG-48943
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
---
 src/gui/opengl/qopengl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/gui/opengl')

diff --git a/src/gui/opengl/qopengl.cpp b/src/gui/opengl/qopengl.cpp
index a77d6743ad..3dedd7d7be 100644
--- a/src/gui/opengl/qopengl.cpp
+++ b/src/gui/opengl/qopengl.cpp
@@ -79,7 +79,7 @@ QOpenGLExtensionMatcher::QOpenGLExtensionMatcher()
             if (!glGetStringi)
                 return;
 
-            GLint numExtensions;
+            GLint numExtensions = 0;
             funcs->glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
 
             for (int i = 0; i < numExtensions; ++i) {
-- 
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