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Re: [Tinycc-devel] const_wanted
From: |
Thomas Preud'homme |
Subject: |
Re: [Tinycc-devel] const_wanted |
Date: |
Sun, 31 Jul 2011 17:05:49 +0200 |
User-agent: |
KMail/1.13.7 (Linux/3.0.0-1-amd64; KDE/4.6.5; x86_64; ; ) |
Le dimanche 31 juillet 2011 16:27:57, grischka a écrit :
> Thomas Preud'homme wrote:
> >> Can you show an example where this happens, that is that
> >>
> >> const_wanted is false
> >>
> >> and
> >>
> >> cur_text_section is NULL
> >>
> >> at the same time in cond_expr()?
> >
> > Sure. It's a side effect of the VLA array patches. On Hurd, there is a
> > header with something like:
> >
> > #define FOO_COUNT (cond ? 2 : 42)
> >
> > type foo_array[FOO_SIZE];
> >
> > This lead post_type to call gexpr() which will eventually call
> > cond_expr() without const_wanted. This in turn will try to generate some
> > code but will segfault due to cur_text_section being NULL (this is how I
> > spotted it, it caused a segfault in the testsuite on Hurd)
>
> I still cannot reproduce this. Can you show a self contained
> example to exhibit the bug?
Mmmmh good point, I should have tried with mob. I can't reproduce it neither.
So I guess master is not as close to mob as I thought. I revert the patch
immediately and keep it in Debian (it's only use in Debian experimental) until
I found which patch fixed (or hide) the issue (it's not gonna be easy since I
heard git is not available on Hurd so no git bisect).
Best regards,
Thomas Preud'homme
>
> --- grischka
>
> > I can give you the exact content of the header on Hurd if you need.
> >
> > Best regards,
> >
> > Thomas Preud'homme
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- [Tinycc-devel] const_wanted, grischka, 2011/07/31
- Re: [Tinycc-devel] const_wanted, Thomas Preud'homme, 2011/07/31
- Re: [Tinycc-devel] const_wanted, grischka, 2011/07/31
- Re: [Tinycc-devel] const_wanted,
Thomas Preud'homme <=
- Re: [Tinycc-devel] const_wanted, grischka, 2011/07/31
- Re: [Tinycc-devel] const_wanted, Thomas Preud'homme, 2011/07/31
- Re: [Tinycc-devel] const_wanted, grischka, 2011/07/31
- Re: [Tinycc-devel] const_wanted, Thomas Preud'homme, 2011/07/31
- Re: [Tinycc-devel] const_wanted, grischka, 2011/07/31
- Re: [Tinycc-devel] const_wanted, Michael B. Smith, 2011/07/31