From: nobu.nokada@...
Date: 2005-08-21T09:36:34+09:00
Subject: Re: Wandering in the Wilderness Project

Hi,

At Sun, 21 Aug 2005 02:57:18 +0900,
Charles E. Thornton wrote in [ruby-core:05584]:
> 2) 'special_generic_ivar' - a) Is this to trigger Garbage Collection 
> 
>                                  ONLY for Special Constant Values?
>                            - b) If it is - Is it because there is no real
>                                 object in Object Space to trigger GC?

Yes.

>      bb) SPECIAL_CONST_P(obj) returns TRUE if
> 
>            ( IMMEDIATE_P(obj)  ||   !RTEST(obj)  ) is TRUE
> 
>                 IMMEDIATE_P(obj) is TRUE if   ( (obj) & 03 ) is non-zero
> 
>                 !RTEST(obj) is TRUE if  obj = is not QNIL & is not QFALSE

No, it's logic of RTEST(obj).  Inverted in SPECIAL_CONST_P().

-- 
Nobu Nakada