Segmentation fault in QApplication constractor

[Coldman]

Hi guys!
I get very strange segmentation fault in my Qt desctop GUI app.
It is look like QApplication search execute file path and crash in this process, in Application constractor.
I found, that this error depend with length of path to my execute. For example in folder /home/user/Projects/Qt/myProgram/Developmet
it crash, but in folder /home/user launch normal.
Needed to say, that other my projects dnt have this problem.
I cant find reason of this error.
Can someone halp me with this trouble?

I use solaris cpp compiler with solaris studio in my Solaris OS, static build of Qt application.
Qt version 4.6.1

stack call of my program before crash:
qAtomicAssignQFileInfoPrivate::Data(0x1, 0x8ea97d8, 0x26, 0x89ddd2c)
QFileInfo::operator=(0x8045f54, 0x8045f24, 0x8045f40, 0x89ddd62)
QFileInfo::setFile(0x8045f54, 0x8045f70, 0x0, 0x1)
QFSFileEnginePrivate::canonicalized(0x8045ffc, 0x8046000, 0x3, 0x8a1b3c1)
QFSFileEngine::fileName(0x804649c, 0x8ea83c0, 0x6, 0x89dd22e)
QFileInfoPrivate::getFileName(0x804655c, 0x8ea83d0, 0x6, 0x89ddf84)
QFileInfo::canonicalFilePath(0x804655c, 0x8046558, 0x8046578, 0x8a36f4d)
QCoreApplication::applicationFilePath(0x80465ac, 0x8b29c98, 0x80465c8, 0x8a36d8e)
QCoreApplication::applicationDirPath(0x80465f4, 0xf, 0x2f2387f, 0x896fc1e)
QLibraryInfoPrivate::findConfiguration(0xfd3c3000, 0x8046620, 0x8046620, 0x8b29c98, 0x1, 0x8046430)
QLibrarySettings::QLibrarySettings(0x8ea83b0, 0x0, 0x4000, 0x896fad6)
qt_library_settings(0xfd3c3000, 0xfef1d81c, 0x1, 0x8046690, 0x1, 0x80464a0)
QLibraryInfo::location(0x80467e4, 0x5, 0x8046828, 0x8a37b93)
QCoreApplication::libraryPaths(0x804684c)
QCoreApplication::init(0x8046a9c, 0x8ea7490, 0x0, 0x8a34b46)
QCoreApplication::QCoreApplication(0x8046a9c, 0x8ea7490, 0x8046ad4, 0x1)
QApplication::QApplication(0x8046a9c, 0x8046ab0, 0x8046ad4, 0x40601, 0x0, 0x0)
main(argc = 1, argv = 0x8046ad4)

main code:
#include <QtGui/QApplication>
#include "MainWindow.h" //main window header
#include <QTextCodec>
#include "definitions.h"* //file with VERSION and COMPILED constants*
#include <iostream>

int main(int argc, char *argv[]) {
#ifdef COMPILED
std::cerr<<"Compiled date and time: "<<COMPILED<<"\n";
#endif
#ifdef VERSION
std::cerr<<"Current veriosn: "<<VERSION<<"\n";
#endif
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
QApplication app(argc, argv); //Failed here all rows before works correct in other projects
MainWindow Form1;
Form1.show();
return app.exec();
}

[SGaist]

Hi and welcome to devnet,

I don't have any solaris system nor an old Qt version like that but from your code you're calling setCodecForTr and setCodecForCStrings too early. You need to first create the QApplication.

[Coldman]

@SGaist thanks for your help. I chnaged my code, but this dnt help. I also use my exceptions in my project and multiple inheritance for one my class. My class inherits from simple class and QAbstractTableModel, and in header file of my class i declare
class MyClass: public QAbstractTableModel, public SimpleClass
{
}

May be reason is wrong generated code?

[SGaist]

What is SimpleClass ?

[Coldman]

@SGaist SimpleClass is a clas, that created by me. It dnt inherits from other classes, ie dnt have parent class. I use this for comynicate with some external program

[SGaist]

Does the crash also happen if you only have:

QApplication app(argc, argv);
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
return app.exec();

in your main ?

[Coldman]

@SGaist yes, I'm sory, needed to send you my main code earlier.
Look at my main code:
#include <QtGui/QApplication>
#include "MainWindow.h"
#include <QTextCodec>
#include "definitions.h"
#include <iostream>

int main(int argc, char *argv[]) {
// initialize resources, if needed
// Q_INIT_RESOURCE(resfile);
#ifdef COMPILED
std::cerr<<"Compiled date and time: "<<COMPILED<<"\n";
#endif
#ifdef VERSION
std::cerr<<"Current veriosn: "<<VERSION<<"\n";
#endif
QApplication app(argc, argv);
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
MainWindow Form1;
Form1.show();
return app.exec();
}

[Coldman]

I think solution is to look to code, that compiler generate.
Douse anyone know how to decompile my object file?

[SGaist]

Again: before trying to analyze the results of your compiler, can you run a default application ?

[Coldman]

@SGaist other projects run correct.
I get solution - use g++ compiler and gmake instead of solaris compiler and dmake.
My project work correct now

[SGaist]

If you want to use the solaris compiler with Qt you probably have to first recompile Qt yourself. Anyway, switching to g++ is not a bad idea in this case.