Crash when executing script (free(): invalid next size)

Tom Robinson · 2012-08-17T20:45:23

Hi, I have a global function that is causing a crash when it is executed on linux or mac. It is registered like this: [source lang="cpp"]engine->RegisterGlobalFunction("void AddIconMarker( const string &in, const string &in, dimension2di frameDimension, int frame )", asFUNCTIONPR(CBanner::AddIconMarker, (const std::string &, const std::string &, dimension2di, int), void), asCALL_CDECL);[/source] In windows, a call like the following works fine: [source lang="cpp"]AddIconMarker( "$NONE$", "GUI/InteractionIcons.png", dimension2di(16,16), 9 );[/source] However, on linux and mac this results in a crash with the error 'free(): invalid next size' Backtrace: 0 0xb7fdd424 __kernel_vsyscall 1 0xb7ace1ef raise 2 0xb7ad1835 abort 3 0xb7b092fa ?? 4 0xb7b13e42 ?? 5 0xb6e5e84c asCScriptEngine::CallFree /home/tom/kagscript/3rd/angelscript/sdk/angelscript/source/as_scriptengine.cpp 3466 6 0xb6e8ec25 CallSystemFunction /home/tom/kagscript/3rd/angelscript/sdk/angelscript/source/as_callfunc.cpp 498 7 0xb6e3d8ae asCContext::ExecuteNext /home/tom/kagscript/3rd/angelscript/sdk/angelscript/source/as_context.cpp 2024 8 0xb6e3bea6 asCContext::Execute /home/tom/kagscript/3rd/angelscript/sdk/angelscript/source/as_context.cpp 1092 9 0xb6a34f6e asScript::ExecuteWithDebug /home/tom/kagscript/trunk/Scripting/asScript.cpp 180 It gets to CallSystemFunction for the AddIconMarker function, then tries to CallFree and we get this crash. I've stepped through the code and verified that other global functions registered in a similar way have been executed correctly, with the same CallFree call taking place. For example, the following regiestered global function works fine on all 3 platforms: [source lang="cpp"]engine->RegisterGlobalFunction("void AddColorMarker( const string &in, SColor color )", asFUNCTIONPR(CBanner::AddColorMarker, (const std::string &, SColor), void), asCALL_CDECL);[/source] I'm not really sure what's going on and would really appreciate any help you can provide.

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Started by Shadlington August 15, 2012 12:46 PM

10 comments, last by Shadlington 12 years, 3 months ago

WitchLord

4,860

August 17, 2012 07:24 PM

Looking back at the constructors I see that they both have the exact same signature. The constuctor wrapper for the Vec2f and dimension2df look the same to the linker and it probably ends up choosing the wrong one.

The problem is not with using templates, but that they were used incorrectly.

Anyway, I'm pleased that the problem was solved.

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