error in qdebug.h/qglobal.h breaks compilations with QT_NO_WARNING_OUTPUT defined

Reproducible with any Qt 4.x version using the following code:

#define QT_NO_WARNING_OUTPUT
#include <QtGui>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

return 0;
}

With VC++ this generates syntax errors:

..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : warning C4091: 'inline __declspec(dllimport ) ' : ignored on left of 'class QDebug' when no variable is declared
..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : error C2143: syntax error : missing ';' before 'if'
..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : error C2143: syntax error : missing ';' before 'if'
..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : error C2143: syntax error : missing ';' before 'else'
..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : error C2143: syntax error : missing ';' before '{'
..\..\..\Qt\4.3.0\include\QtCore/../../src/corelib/io/qdebug.h(98) : error C2447: missing function header (old-style formal list?)

To surpress error messages from Qt, install a message handler that does nothing:

http://doc.trolltech.com/4.3/qtglobal.html#qInstallMsgHandler

or that logs the messages for support purposes.