Segfault when binding function which takes script-array param

Michael Rubin · 2014-01-29T02:42:31

I'm trying to bind a C++ function which takes a script-array param. Following the example in the string add-on's utils, I've got the following (in C++): namespace { void Foo(const CScriptArray& arr, MyClass* sprite) {} } scriptEngine.RegisterObjectMethod("MyClass", "void Foo(const array<Vector2> &in)", asFUNCTION(Foo), asCALL_CDECL_OBJLAST); I'm getting a segfault at the following location: asSSystemFunctionInterface &operator=(const asSSystemFunctionInterface &in) { func = in.func; Am I registering the function incorrectly? I'm using: SDK 2.28.1 WIP - 2014/01/23 Thank you very much. UPDATE: Please note that if I specify the array param as: const array<string> &in, I don't experience the issue. Vector2 above is an application-registered value type.

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Started by iraxef January 28, 2014 02:01 AM

10 comments, last by iraxef 10 years, 10 months ago

WitchLord

4,860

January 29, 2014 12:27 AM

Thanks a lot for the file

I managed to reproduce the problem with the following test:

engine = asCreateScriptEngine(ANGELSCRIPT_VERSION);
engine->SetMessageCallback(asMETHOD(COutStream, Callback), &out, asCALL_THISCALL);
 
RegisterScriptArray(engine, false);
 
engine->SetDefaultNamespace("gfx");
 
engine->RegisterObjectType("GfxSprite", 0, 1);
engine->RegisterObjectMethod("GfxSprite", "array<gfx::GfxSprite@>@ GetChildren() const", asFUNCTION(0), asCALL_GENERIC);
 
r = engine->RegisterObjectMethod("GfxSprite", "void Foo(const array<float> &in)", asFUNCTION(0), asCALL_CDECL_OBJLAST);
 
engine->Release();

The condition that hit the bug was that you were registering two (or more) methods on the same type that had arrays as parameters or return types + that you were using namespaces. In this particular situation the code picked the wrong type as the template type and instead tried to create the new template instance based on the previous template instance.

I've fixed the bug in revision 1826.

I also took the opportunity to change the code so that you no longer need to prefix the sub-type in the array with the namespace. :)

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