passing by reference... my darkest enemy
actual reason below:
In your case (without reference) the compiler generates a temporary object (int) for the first argument of your MyApplication constructor. You pass this temporary int to QApplication’s constructor (with int reference), which saves the address of this reference. Once your MyApplication constructor is done the temporary int is destroyed but QApplication still has its address.
/*
* Hedgewars, a free turn based strategy game
* Copyright (c) 2005-2011 Andrey Korotaev <unC0Rr@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <QObject>
#include "achievements.h"
// TODO: use some structs instead?
const char achievements[][6][256] = {
// 6 array members each: id, caption, description, image, required number, attributes
/*
{"rounds1", QT_TRANSLATE_NOOP("achievements", "No complete Newbie!"), QT_TRANSLATE_NOOP("achievements", "Manage to survive %1 games playing on the official server, no matter if it's a draw or win."), "nonewb", "1", ""},
{"rounds2", QT_TRANSLATE_NOOP("achievements", "Getting used to it!"), QT_TRANSLATE_NOOP("achievements", "Manage to survive %1 games playing on the official server, no matter if it's a draw or win."), "getused", "25", ""},
{"rounds3", QT_TRANSLATE_NOOP("achievements", "Backyard Veteran"), QT_TRANSLATE_NOOP("achievements", "Manage to survive %1 games playing on the official server, no matter if it's a draw or win."), "veteran", "100", ""},
{"rounds4", QT_TRANSLATE_NOOP("achievements", "1001 Stories to tell"), QT_TRANSLATE_NOOP("achievements", "Manage to survive %1 games playing on the official server, no matter if it's a draw or win."), "stories", "1001", ""},
{"rope1", QT_TRANSLATE_NOOP("achievements", "Big Swing"), QT_TRANSLATE_NOOP("achievements", "Bridge 1000 pixels while using one rope."), "bgswing", "1", ""},
{"rope2", QT_TRANSLATE_NOOP("achievements", "Spider Hog"), QT_TRANSLATE_NOOP("achievements", "Bridge 3000 pixels while using one rope."), "spider", "1", "hidden"},
{"skipping", QT_TRANSLATE_NOOP("achievements", "Skipped"), QT_TRANSLATE_NOOP("achievements", "Let a single hog skip over the surface of the water for at least 5 times."), "skipped", "1", "hidden"},
{"cgunman", QT_TRANSLATE_NOOP("achievements", "Crazy Gunman"), QT_TRANSLATE_NOOP("achievements", "Eliminate 3 hogs with a single shot of the sniper rifle."), "cgunman", "1", ""},
*/
{ {0, 0, 0, 0, 0, 0} } // "terminator" line
};