comp.lang.ada
 help / color / mirror / Atom feed
From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: GNAT'Object_Size
Date: 1997/12/10
Date: 1997-12-10T00:00:00+00:00	[thread overview]
Message-ID: <dewar.881730176@merv> (raw)
In-Reply-To: 348C1957.3F4352F4@elca-matrix.ch


<<Some Ada 83 compilers (Verdix in this case) do smart things for 'Size applied
to parameters: they return the value size for mode in parameters, and the
object size for mode out parameters (how they do it I don't know), which is
exactly what is needed to solve the above problem, but doesn't help when
porting to other compilers.
>>

An obvious, but wrong, approach is to use the 'Constrained bit to indicate
whether the original object is constrained or not. This does not work,
because an originally unconstrained object can appear constrained because
of an intermediate parameter stage.





  reply	other threads:[~1997-12-10  0:00 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-12-03  0:00 Ada Enumerations Jeffrey Harris
1997-12-03  0:00 ` James S. Rogers
1997-12-03  0:00   ` Robert Dewar
1997-12-03  0:00     ` Stanley R. Allen
1997-12-04  0:00       ` GNAT'Object_Size Mats Weber
1997-12-04  0:00       ` GNAT'Object_Size Mats Weber
1997-12-08  0:00         ` GNAT'Object_Size Mats Weber
1997-12-10  0:00           ` Robert Dewar [this message]
1997-12-04  0:00       ` GNAT'Object_Size Mats Weber
1997-12-04  0:00       ` GNAT'Object_Size Mats Weber
1997-12-05  0:00         ` GNAT'Object_Size Mats Weber
1997-12-04  0:00       ` Ada Enumerations Matthew Heaney
1997-12-04  0:00         ` Stanley R. Allen
1997-12-07  0:00           ` Keith Thompson
1997-12-07  0:00             ` Robert Dewar
1997-12-08  0:00               ` Keith Thompson
1997-12-07  0:00                 ` Matthew Heaney
1997-12-11  0:00                   ` John G. Volan
1997-12-07  0:00             ` Matthew Heaney
1997-12-04  0:00       ` Robert Dewar
1997-12-04  0:00         ` Stanley R. Allen
1997-12-18  0:00           ` Wes Groleau
1997-12-04  0:00       ` GNAT'Object_Size Mats Weber
1997-12-04  0:00 ` Ada Enumerations Stephen Leake
1997-12-04  0:00   ` Matthew Heaney
1997-12-04  0:00     ` Robert Dewar
1997-12-06  0:00       ` Jean-Pierre Rosen
1997-12-06  0:00         ` Making Predefined Operators Abstract Matthew Heaney
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox