Re: Is this Lua table an array?

[Doug Currie <doug.currie@...>]

Thursday, October 5, 2006, 11:32:30 AM, David Jones wrote:

> On 5 Oct 2006, at 16:00, Doug Currie wrote:

>> Thursday, October 5, 2006, 6:18:43 AM, David Jones wrote:
>>
>>> lua_tostring _has_ to modify the stack argument in order to keep the
>>> GC happy.
>>
>> Well, it _could_ create a global weak reference to the string instead.

> No, because without a strong reference to the string the GC would be
> at liberty to free the string and thereby invalidate the pointer that
> you just got back from lua_tostring in the C world.

You're right, of course. I was groping for a way to make a reference
to the string that was weak on the activation frame; but since those
frames aren't Lua objects (no call/cc in Lua) that won't work.

Sorry for the noise.

e

-- 
Doug Currie
Londonderry, NH