Subj : Re: JS_ValueToString and STRING_TO_JSVAL
To   : netscape.public.mozilla.jseng
From : Weiyang Zhou
Date : Fri Aug 12 2005 01:13 am

If I have the following code, do I have to add str to root too?

    jsval argv[1];
    jsval rval;

    JSString* str = JS_NewString(context, "arg from C", 10);

    argv[0] = STRING_TO_JSVAL(str);

    JS_CallFunctionName(context, object, "myfunc", 1, argv, &rval);



"Brendan Eich" <brendan@meer.net> wrote in message 
news:42FC29D9.8000408@meer.net...
> Weiyang Zhou wrote:
>
>> What's the purpose of converting argv[i] to str, the assign str back to 
>> argv[i]? In the end, argv[i] remain the same.
>
>
> Not if !JSVAL_IS_STRING(argv[i]) beforehand.
>
> See http://www.mozilla.org/js/spidermonkey/gctips.html for why this is 
> done in native methods such as Load.
>
> /be

.