Hello all, it seems that when this is compiled with VS2010, it crashes at the destructor call, as can be seen by the stack dump:
Qt Code: 
  1. msvcr100d.dll!operator delete(void * pUserData)  Line 52 + 0x51 bytes	C++
  2. >	testini.exe!QVariant::`scalar deleting destructor'()  + 0x46 bytes	C++
  3.  	testini.exe!QList<QVariant>::node_destruct(QList<QVariant>::Node * from, QList<QVariant>::Node * to)  Line 418 + 0x3e bytes	C++
  4.  	testini.exe!QList<QVariant>::free(QListData::Data * data)  Line 744	C++
  5.  	testini.exe!QList<QVariant>::~QList<QVariant>()  Line 718	C++
  6.  	testini.exe!WzConfig::vector2i(const QString & name)  Line 65 + 0x1d bytes	C++
  7.  	testini.exe!main(int argc, char * * argv)  Line 82 + 0x31 bytes	C++
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The code in question looks like (it crashes on exit of this function):
Qt Code: 
  1. Vector2i WzConfig::vector2i(const QString &name)
  2. {
  3. 	Vector2i r;
  4. 	ASSERT_OR_RETURN(r, contains(name), "Missing %s", name.toUtf8().constData());
  5. 	QVariantList v = value(name).toList();
  6. 	ASSERT(v.size() == 2, "Bad list of %s", name.toUtf8().constData());
  7. 	r.x = v[0].toInt();
  8. 	r.y = v[1].toInt();
  9. 	return r;
  10. }
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Qt Code: 
  1. int main(int argc, char *argv[])
  2. {
  3.     QCoreApplication a(argc, argv);
  4.  
  5.     {
  6. 	    WzConfig ini("test.ini");
  7. 	    ini.setVector2i("test", Vector2i(1, 2));
  8. 	    ini.setVector3i("test2", Vector3i(1, 2, 3));
  9. 	    ini.setVector3f("test3", Vector3f(1, 2, 3));
  10. 	    ini.setVector3f("test3", Vector3i(1, 2, 3));
  11. 	    ini.setVector3i("test3", Rotation(1, 2, 3));
  12.     }
  13.     {
  14. 	    WzConfig ini("test.ini");
  15. 	    Vector2i v = ini.vector2i("test");
  16. 	    qWarning("x = %d, y = %d", v.x, v.y);
  17.     }
  18.  
  19.     return 0;
  20. }
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Qt Code: 
  1. struct Vector2i
  2. {
  3. 	Vector2i() {}
  4. 	Vector2i(int x, int y) : x(x), y(y) {}
  5.  
  6. 	int x, y;
  7. };
  8.  
  9.  
  10. class WzConfig : public QSettings
  11. {
  12. 	Q_OBJECT
  13.  
  14. public:
  15. 	WzConfig(const QString &name, QObject *parent = 0) : QSettings(QString("test.ini"), QSettings::IniFormat, parent) { Q_UNUSED(name); }
  16. 	Vector3f vector3f(const QString &name);
  17. 	void setVector3f(const QString &name, const Vector3f &v);
  18. 	Vector3i vector3i(const QString &name);
  19. 	void setVector3i(const QString &name, const Vector3i &v);
  20. 	Vector2i vector2i(const QString &name);
  21. 	void setVector2i(const QString &name, const Vector2i &v);
  22. };
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Does anyone know if this is a Qt bug (version 4.7.2) or is this a compiler bug (VS 2k10)--it don't seem to crash on linux, or are we doing something wrong ?
Note: VS2k10 was used to compile 4.7.2 libs, since that isn't made available yet on Qt's main site)

Thanks for the info.