Re: proposal: drop support for ada on tru64-alpha

[Geoff Keating <geoffk at geoffk dot org>]

On 31/08/2004, at 2:42 AM, Arnaud Charlet wrote:

> > My proposal is to disable Ada in the toplevel configure for
> > tru64-alpha, and fix the bug.  I would do this in mainline; Mark may
> > choose to do this in 3.4 as well, since the bug is targeted at 3.4.3.
> >
> > Any objections?  If you do have objections, are you willing and able 
> > to
> > debug the problem?  If so, when would you expect to be able to do it?
>
> I must say I can't find from the bugzilla comments what is the 
> relationship
> between this PR and Ada builds, in particular since this PR seems to
> be g++ specific.
>
> In any case, if the issue is related to PCH on alpha-tru64, then we 
> should
> disable pch on alpha-tru64, and not Ada.

No, the problem is not related to PCH on Alpha-tru64.  I don't know if 
PCH even works on that platform.  I would characterise the problem as 
"I made some change to GCC and it triggered a latent bug on 
Alpha-tru64."

> In general I would object to disabling Ada on alpha-tru64 on these 
> grounds,
> this will only give this PR an even lower priority.
>
> Now, I feel that I do not all the information at hand, so more 
> justification
> would be needed here to help me understand the issue at hand (and once
> I understand the issue better, I'd guess there will be better 
> solutions than
> simply disabling Ada).

The problem is that when you apply the patch from bugzilla, which is 
not specific to either Ada, C++, or Tru64, the bootstrap failure 
described in 13750 appears, a miscompare in Ada.

So, Arnaud, do you have access to an Alpha-tru64 system with Ada?  
Would you be willing to investigate this bug?

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