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I'm trying to bind class using btVector3. Binding btVector3 with constructor works fine. Binding functions like:
void SetPosition(const btVector3& position)
works fine, but binding this:
btVector3 GetPosition()
gives me following error:
error C2719: 'unnamed-parameter': formal parameter with
__declspec(align('16')) won't be aligned
I understand that btVector3 is aligned, how to fix/workaround this?

Dunno if it's the exact same problem (and if it's still relevant to you, almost two months on), but I was having trouble binding Bullet btTransforms using Luabind. For instance, this gave the same error you described:
void bindBtTransform(lua_State *L) {
luabind::module(L)
[
luabind::class_<btTransform>("btTransform")
// constructors
.def(luabind::constructor<>())
// methods
// INCORRECT -------------------------------------------------------
.def("getOrigin", &btTransform::getOrigin)
];
return;
}
However, when I gave the full signature of the getOrigin() function, it worked:
void bindBtTransform(lua_State *L) {
luabind::module(L)
[
luabind::class_<btTransform>("btTransform")
// constructors
.def(luabind::constructor<>())
// methods
// CHANGE TO THIS-------------------------------------------------
.def("getOrigin", (const btVector3& (btTransform::*)() const)&btTransform::getOrigin)
];
return;
}
Hope that works for you; my problems cleared right up when I made the change.
I'm still getting the error now, but only when I define the multiplication operator for btQuaternions. I'm hoping it's a similar fix.