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Re: [fortran, patch] Fix PR15959, character array initialization.
- From: Feng Wang <wf_cs at yahoo dot com>
- To: Tobias Schlüter <tobias dot schlueter at physik dot uni-muenchen dot de>
- Cc: Steven Bosscher <stevenb at suse dot de>, fortran at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
- Date: Sat, 2 Apr 2005 10:24:54 +0800 (CST)
- Subject: Re: [fortran, patch] Fix PR15959, character array initialization.
--- Tobias Schlüter <tobias.schlueter@physik.uni-muenchen.de> wrote:
> Feng Wang wrote:
> > Yes, it is a really question. In fact we now don't pad parameter string.
> But I
> > think it is another bug. Example follows:
> >
> > character(len = 10),parameter:: a = 'hello'
> > print *, a, "world"
> > end
> >
> > And I report this bug as PR20713.
>
> Hm, I think I ran into this a few weeks ago, but it seems like I didn't open
> a
> PR for it.
>
> This problem suggests that your patch is either incomplete or attacks the
> problem too late in the compilation chain.
I don't think so. This is not the same problem. Do we expect one patch to fix
all character array bugs?
> Because this new problem is
> related to constant folding (i.e. 'a' in the print statement gets expanded to
> the literal string "hello" instead of the correct "hello "), it is clear
> that at the time of constant folding the string length in this example hasn't
> been verified.
I think it is because that the length is not correctly set.
> IOW I think it would be preferable if a fix to PR 15959 fixed
> PR 20713 along the same way.
>
Ok. I will try.
Best Regards,
Feng Wang
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