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Crash in std::set::insert()

lride · 2012-12-11T05:24:34

I made a bomberman-like program. I keep a 2d array of Tile object in a GameMap object. Every time the player crosses to a different tile, the new tile's onEnter() gets called and the old tile's onExit() gets called Each tile object has std::set that stores all the entities that are on the tile. onEnter() adds the pointer to the entity to its set and onExit() erases the pointer from its set. But my game crashes there. [source lang="cpp"] //Check if the player moved to a different tile if(previousLoc!=currentLoc) { gameWorld->getGameMap().onEnter(currentLoc.x, currentLoc.y, this); gameWorld->getGameMap().onExit(previousLoc.x, previousLoc.y, this); } GameMap::onEnter(int x, int y, Entity * e) { tiles[y][x].onEnter(e); } GameMap::onExit(int x, int y, Entity *e) { tiles[y][x].onExit(e); } Tile::onEnter(Entity * e) { entities.insert(e); //entities is declared as std::set<Entity*> entities } Tile::onExit(Entity * e) { entities.erase(e); } [/source] The stack trace shows up like this > Game3.exe!std::_Tree<std::_Tset_traits<Entity *,std::less<Entity *>,std::allocator<Entity *>,0> >::_Root() Line 2139 C++ Game3.exe!std::_Tree<std::_Tset_traits<Entity *,std::less<Entity *>,std::allocator<Entity *>,0> >::_Insert_nohint<Entity * const &,std::_Nil>(bool _Leftish, Entity * const & _Val, std::_Nil _Newnode) Line 1784 C++ Game3.exe!std::_Tree<std::_Tset_traits<Entity *,std::less<Entity *>,std::allocator<Entity *>,0> >::insert(Entity * const & _Val) Line 1304 C++ Game3.exe!std::set<Entity *,std::less<Entity *>,std::allocator<Entity *> >::insert(Entity * const & _Val) Line 166 C++ Game3.exe!Tile::onEnter(Entity * e) Line 17 C++ Game3.exe!GameMap::onEnter(int x, int y, Entity * e) Line 118 C++ What can possibly cause my program to crash?

General and Gameplay Programming Programming

Started by lride December 10, 2012 02:34 AM

9 comments, last by Trienco 11 years, 5 months ago

Trienco

2,555

December 11, 2012 05:24 AM

Now I completely solved the problem.
I have no idea why the crash occurred.

Not to rain on your parade, but those two statements are usually mutually exclusive.

f@dzhttp://festini.device-zero.de

Crash in std::set::insert()

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Crash in std::set::insert()

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