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[Bug 1228420] Re: deleteRoom crashes in current git

To: mudlet-makers@xxxxxxxxxxxxxxxxxxx
From: Vadim Peretokin <vperetokin@xxxxxxxxx>
Date: Fri, 24 Mar 2017 23:20:13 -0000
Reply-to: Bug 1228420 <1228420@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Changed in: mudlet
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1228420

Title:
  deleteRoom crashes in current git

Status in Mudlet:
  Fix Released

Bug description:
  Given the attached map, the attached alias - when used as 'area delete
  255' - crashes Mudlet. Here is the backtrace:

  Program received signal SIGSEGV, Segmentation fault.
  0x00007ffff51d58f3 in QMapNodeBase::nextNode() const () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  (gdb) bt
  #0  0x00007ffff51d58f3 in QMapNodeBase::nextNode() const () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #1  0x0000000000523a7c in QMapNode<int, QString>::nextNode (this=0x3ec5d00) at ../../../Qt5.1.1/5.1.1/gcc_64/include/QtCore/qmap.h:119
  #2  0x00000000005206c3 in QMap<int, QString>::const_iterator::operator++ (this=0x7fffffffbb90) at ../../../Qt5.1.1/5.1.1/gcc_64/include/QtCore/qmap.h:486
  #3  0x00000000005fb55d in QMap<int, QString>::keys (this=0x3e413b0) at ../../../Qt5.1.1/5.1.1/gcc_64/include/QtCore/qmap.h:946
  #4  0x00000000005f9e90 in TRoom::removeAllSpecialExitsToRoom (this=0x3e412a0, _id=11) at TRoom.cpp:289
  #5  0x0000000000656e36 in TRoomDB::__removeRoom (this=0x1a153e0, id=11) at TRoomDB.cpp:99
  #6  0x00000000005f8fb4 in TRoom::~TRoom (this=0x3e41780, __in_chrg=<optimised out>) at TRoom.cpp:61
  #7  0x0000000000657038 in TRoomDB::removeRoom (this=0x1a153e0, id=11) at TRoomDB.cpp:127
  #8  0x000000000050466a in TLuaInterpreter::deleteRoom (L=0x19f7a10) at TLuaInterpreter.cpp:6611
  #9  0x00007ffff797c23c in ?? () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #10 0x00007ffff7986d88 in ?? () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #11 0x00007ffff797c64d in ?? () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #12 0x00007ffff797b8d7 in ?? () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #13 0x00007ffff797c802 in ?? () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #14 0x00007ffff7978361 in lua_pcall () from /usr/lib/x86_64-linux-gnu/liblua5.1.so.0
  #15 0x0000000000512c4c in TLuaInterpreter::call (this=0x19fd268, function=..., mName=...) at TLuaInterpreter.cpp:10178
  #16 0x000000000053b95b in TAlias::execute (this=0x2d70490) at TAlias.cpp:426
  #17 0x000000000053a953 in TAlias::match (this=0x2d70490, toMatch=...) at TAlias.cpp:275
  #18 0x00000000005482be in AliasUnit::processDataStream (this=0x19fd478, data=...) at AliasUnit.cpp:281
  #19 0x0000000000468f10 in Host::send (this=0x19fcb40, cmd=..., wantPrint=true, dontExpandAliases=false) at Host.cpp:638
  #20 0x0000000000531bf9 in TCommandLine::enterCommand (this=0x1a56280, event=0x7fffffffd900) at TCommandLine.cpp:522
  #21 0x00000000005308ba in TCommandLine::event (this=0x1a56280, event=0x7fffffffd900) at TCommandLine.cpp:259
  #22 0x00007ffff625ab54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Widgets.so.5
  #23 0x00007ffff625e950 in QApplication::notify(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Widgets.so.5
  #24 0x00007ffff533ddd4 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #25 0x00007ffff62b2a88 in ?? () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Widgets.so.5
  #26 0x00007ffff625ab54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Widgets.so.5
  #27 0x00007ffff625dfe6 in QApplication::notify(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Widgets.so.5
  #28 0x00007ffff533ddd4 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #29 0x00007ffff5840714 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Gui.so.5
  #30 0x00007ffff584992d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Gui.so.5
  #31 0x00007ffff5832a98 in QWindowSystemInterface::sendWindowSystemEventsImplementation(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Gui.so.5
  #32 0x00007fffebcc5940 in ?? () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/plugins/platforms/libqxcb.so
  #33 0x00007ffff3690d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #34 0x00007ffff36910a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #35 0x00007ffff3691164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #36 0x00007ffff5388314 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #37 0x00007ffff533cb6b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #38 0x00007ffff5340bbe in QCoreApplication::exec() () from /home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5
  #39 0x0000000000463094 in main (argc=1, argv=0x7fffffffe048) at main.cpp:274
  (gdb)

  Another, similar backtrace:
  0	QMap<int, QString>::size	qmap.h	363	0x5fc783	
  1	QMap<int, QString>::keys	qmap.h	942	0x5fb975	
  2	TRoom::removeAllSpecialExitsToRoom	TRoom.cpp	289	0x5fa2f4	
  3	TRoomDB::__removeRoom	TRoomDB.cpp	99	0x65c96a	
  4	TRoom::~TRoom	TRoom.cpp	61	0x5f9418	
  5	TRoomDB::removeRoom	TRoomDB.cpp	127	0x65cb6c	
  6	TRoomDB::removeArea	TRoomDB.cpp	146	0x65cc70	
  7	TLuaInterpreter::deleteArea	TLuaInterpreter.cpp	6588	0x504d35	
  8	??	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff797c23c	
  9	??	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff7986d88	
  10	??	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff797c64d	
  11	??	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff797b8d7	
  12	??	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff797c802	
  13	lua_pcall	/usr/lib/x86_64-linux-gnu/liblua5.1.so.0		0x7ffff7978361	
  14	TLuaInterpreter::call_luafunction	TLuaInterpreter.cpp	10109	0x512d22	
  15	TTimer::execute	TTimer.cpp	259	0x537400	
  16	mudlet::slot_timer_fires	mudlet.cpp	887	0x5cbb17	
  17	mudlet::qt_static_metacall	moc_mudlet.cpp	265	0x689850	
  18	QMetaObject::activate(QObject*, int, int, void**)	/home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5		0x7ffff5572261	
  19	QTimer::timerEvent(QTimerEvent*)	/home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5		0x7ffff557ef72	
  20	QObject::event(QEvent*)	/home/vadi/Programs/Qt5.1.1/5.1.1/gcc_64/lib/libQt5Core.so.5		0x7ffff5573549	
  ...	<More>

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References

[Bug 1228420] [NEW] deleteRoom crashes in current git
From: Vadim Peretokin, 2013-09-20