Re: Unused Barrier

[Roberto Ierusalimschy <roberto@...>]

> In 5.3 beta, luaY_parser() there is
> 
>   funcstate.f = cl->p = luaF_newproto(L);
> 
>   funcstate.f->source = luaS_new(L, name);  /* create and anchor TString */
> 
>   luaC_objbarrier(L, funcstate.f, funcstate.f->source);
> 
> Is the "objcarrier" necessary? It seems that funcstate.f is for sure white
> and the barrier is always a no-op in this case.

I think you are right. (The previous call to 'luaS_new' can trigger an
emergency collection, but then all objects will be white after it.)

Thanks for the feedback,

-- Roberto