lua_ref problem

[Chris Chapman <Chris.chapman@...>]

Okay, I'm having to revisit this problem, because my original workaround is
insufficient for the other issues that have arisen because of it. I hope
someone here can see what I'm doing wrong.

Given the script:

do
	function foo()
		print("foo\n");
	end

	function bar()
		print("bar\n");
	end

	print (GetFunctionReference(foo) .. "\n");
	print (GetFunctionReference(foo) .. "\n");
	print (GetFunctionReference(bar) .. "\n");
	print (GetFunctionReference(foo) .. "\n");
end

and "GetFunctionReference" being a C function registered with lua which
looks like:

int		GetFunctionReference(lua_State*	L)
{
	//get a reference to the first argument on the stack

	//check the argument is a lua function
	if (lua_type(L, -1) == LUA_TFUNCTION)
	{
		int		iReference	=	lua_ref(L, 1);
//1 indicates a locked reference

		//return the reference index as a number
		lua_pushnumber(L, iReference);
		return 1;
	}
	else
	{
		return 0;
	}
}

Running this script produces the output:

3
3
3
3

I.e. no matter what I try to pass to lua_ref, I always get 3 back as a
reference. Breakpointing the C code indicates that it is indeed 3 being
returned from lua_ref each time. Tracing the lua code follows the same path
each call.

Again, this is a difference between 4.0.1 and 5.0.

Thanks
ChrisC