Any (self-compiled) Qt app crashes.

Michael Goffioul
Wed, 04 Dec 2002 15:10:03 +0100

I'm in the process of porting a Qt app to Windows/cygwin (it already
runs under Linux and plain Windows). My setup is:

binutils-20020516 (from kde-cygwin site, "ld --version" reports 
	2.11.92 20011001)

I tried to compile and run an application as simple as the following:
	CONFIG += debug
	TARGET = testqt
	SOURCES = main.cpp

	#include <qapplication.h>
	#include <qpushbutton.h>

	int main(int argc, char **argv)
		QApplication app(argc, argv);
		QPushButton *btn = new QPushButton("Click me", 0);
		QObject::connect(btn, SIGNAL(clicked()), &app, SLOT(quit()));
		return app.exec();

Application is compile using "qmake" (QMAKESPEC set to win32-g++) and
"make" (CXXFLAGS set to "-fvtable-thunks", LFLAGS set to

This test application always crashes on the line "btn->show()". The
backtrace is the following:

#0 0x00000000 in ?? ()
#1 0x00401227 in main (argc=1, argv=0x10572b18) at main.cpp:10
#2 0x610072e8 in _libkernel32_a_iname ()
#3 0x610075cd in _libkernel32_a_iname ()
#4 0x0040516e in cygwin_crt0 () at main.cpp:12
#5 0x0040103c in mainCRTStartup ()
#6 0x77e97d08 in _libkernel32_a_iname ()

Applications coming with Qt package (designer, qtconfig) runs without
any problem. The application I'm trying to port also crashes at weird
places, but it must be a more fundamental problem as this little
test app above crashes as well.

Any help or advice would be appreciated.


Michael Goffioul		IMEC-DESICS-MIRA
e-mail:	(Mixed-Signal and RF Applications)
Tel:    +32/16/28-8510		Kapeldreef, 75
Fax:    +32/16/28-1515		3001 HEVERLEE, BELGIUM