From: Thierry Bastian <thierry.bastian@nokia.com>
Date: Tue, 19 Apr 2011 13:47:23 +0000 (+0200)
Subject: Fixed a crash on Windows XP with mingw in threaded-code
X-Git-Tag: qt-v5.0.0-alpha1~4322^2~87
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1712e20a5ad7ead5981ce56b28121a9513b06dd2;p=profile%2Fivi%2Fqtbase.git

Fixed a crash on Windows XP with mingw in threaded-code

The thread callback doesn't align the stack on 16-bytes on WinXP.
That causes a crash when we call SSE code. So now we tell the
compiler to force that alignment of the stack.

Task: QTBUG-18631
Reviewed-By: Olivier
(cherry picked from commit 364ce5b7f5379499562b4f4f5a68da7ba068fe1e)
---

diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index bab6cf8..bdade1d 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -300,7 +300,7 @@ void QThreadPrivate::createEventDispatcher(QThreadData *data)
 
 #ifndef QT_NO_THREAD
 
-unsigned int __stdcall QThreadPrivate::start(void *arg)
+unsigned int __stdcall QT_ENSURE_STACK_ALIGNED_FOR_SSE QThreadPrivate::start(void *arg)
 {
     QThread *thr = reinterpret_cast<QThread *>(arg);
     QThreadData *data = QThreadData::get2(thr);