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From: Martin <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: Compiler quality
Date: Fri, 28 Nov 2008 01:13:46 -0800 (PST)
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Date: 2008-11-28T01:13:46-08:00
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On Nov 27, 2:46=A0pm, Ludovic Brenta <ludo...@ludovic-brenta.org> wrote:
> anon schrieb:
>
> > An example is like using the following statement
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0X :=3D Sin ( A ) + Cos ( W ) ;
> > do use need to also create the statement
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0X :=3D Cos ( W ) + Sin ( A ) ;
>
> Yes, as evidenced byhttp://gcc.gnu.org/PR16095among others.
> Schematically, this bug is triggered by "A =3D B" but not by "B =3D A".
> And incidentally, it is present in the "bug-free" GNAT 3.15p.

To be fair to anon...that's not a SYNTAX bug. His claim was that
compilers should be able to be 100% tested for syntax bugs by limiting
the input so much that's it becomes practical to do on current
machines.

Cheers
-- Martin