From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,7f1e0b399cd01cb0
X-Google-Attributes: gid103376,public
From: tmoran@bix.com (Tom Moran)
Subject: Re: Unreferenced lock variables
Date: 1999/04/16
Message-ID: <3717b010.18059463@news.pacbell.net>#1/1
X-Deja-AN: 467294343
References: <x7v4smnszvu.fsf@pogner.moho> <7ero31$n46$1@nnrp1.dejanews.com>
 <x7vk8viqsla.fsf@pogner.moho> <7esrmv$k1n$1@nnrp1.dejanews.com>
 <3713b417.22324981@news.pacbell.net> <7f57g5$rpq$1@nnrp1.dejanews.com>
 <371658a7.19974365@news.pacbell.net> <7f6ei7$tvl$1@nnrp1.dejanews.com>
 <3717869e.7448255@news.pacbell.net> <37179A21.82A1AF7@averstar.com>
X-Complaints-To: abuse@pacbell.net
X-Trace: typhoon-sf.pbi.net 924299513 206.170.24.51 (Fri,
 16 Apr 1999 14:51:53 PDT)
Organization: SBC Internet Services
NNTP-Posting-Date: Fri, 16 Apr 1999 14:51:53 PDT
Newsgroups: comp.lang.ada
Date: 1999-04-16T00:00:00+00:00
List-Id: <comp.lang.ada>

>permission
>to remove an Initialize/Finalize pair only if there is an assignment
Ah, so the complete removal of the (seemingly) unused control type
declaration is a consequence of being able to optimize the case where
it is in fact used (later)? 
> Initialize(X);
>     ...
>    Finalize(X)
>    <copy Y to X>
What happens if the Initialize or Finalize of X, (which will be
optimized away) modifies Y?  Or is that illegal?