dofile, loadfile, loadstring in a coroutine

[Graham Wakefield <lists@...>]

Just a sanity check - should there be a problem making these calls  
within a coroutine (thread) resumed from C?  When I try, I get no  
error but also nothing actually happens.  A bit hard to show the code  
here since it is embedded in a complex C++ application, sorry, but  
even this:

f = loadstring("print('hello')")
print("f()", f, f())

results in:

f()	function: 0x1095f60

i.e., no 'hello' appears.

The main thread lua state is created like this:

	L = lua_newstate(Lua :: alloc, 0);	
	if (L) {
		//lua_atpanic(L, Lua :: panic);
		luaL_openlibs(L);
	}

The main lua file is then loaded into a lua_State * L like this:

	if (luaL_loadfile (L, path))
	{
		printf("dofile error: %s", lua_tostring(L, -1));
		lua_pop(L, 1);
	}

Then resumed like this:

	int result = lua_resume(L, lua_gettop(L) - 1); // in case I pushed  
some args to it

Is this part of the whole yielding across a pcall problem (which I  
have to admit is still not clear, despite reading many manual entries  
and lua-list messages).