Re: destroy a variable

[Roger D Vargas <luo_hei@...>]

Luiz Henrique de Figueiredo escribió:
> > If I repeatedly execute the string "a=math.random(1,20)" in my embedded 
> > interpreter, when I stop the host I got a crash with a lot of glibc 
> > errors.
>
> Perhaps you're overflowing the stack? It shouldn't happen. Can you post
> code? A minimal example would help.
This is the code that executes the string
void ScriptEngine::exec(string str)
{
    if (str.length() > 0) {
        int error = luaL_loadbuffer(luaVM, str.c_str(), str.length(), 
"line") || lua_pcall(luaVM, 0, 0, 0);
            if (error) {
                cout << lua_tostring(luaVM, -1) << endl;
                lua_pop(luaVM, 1);
            }
    }
}

In my code I simply do this, as a basic stress test:

scInt->exec("a=math.random(1,20)");

> > If I replace the code by "math.random(1,20)" no problems occurs. 
>
> Overflowing the stack does not explain this.
>
> > Is there any way to destroy variables used in an script when I dont need 
> > them anymore?
>
> Set them to nil, but you shouldn't have to do that.
> --lhf

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