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Re: wrong-code regressions review
- From: "Giovanni Bajo" <rasky at develer dot com>
- To: "Bradley Lucier" <lucier at math dot purdue dot edu>
- Cc: <gcc at gcc dot gnu dot org>
- Date: Wed, 15 Dec 2004 14:12:34 +0100
- Subject: Re: wrong-code regressions review
- References: <95C1438C-4E38-11D9-A170-003065BA681E@math.purdue.edu>
Bradley Lucier <lucier@math.purdue.edu> wrote:
> 18548 is a regression (and it's not target specific, it happens on
> sparc-solaris, x86-linux, and ppc-darwin), but it's very hard to figure
> out what is causing the current problem. There were two previous
> wrong-code regressions on this code base that have been fixed by
> unrelated patches, so I don't know if fixing 18548 will just bring
> other problems to the surface.
34MB of preprocessed files is really too much. If you are really interested
in having this fixed (instead of waiting it to be caught and fixed through a
different testcase/language), you could for instance start by analyzing the
assembly code to find out the miscompilation at assembly level. If you spot
that, you can start reducing it even without begin able to run the file
(just compiling it and looking at the assembly). When the testcase is small,
it's easy to reconstruct something around it to make it runnable.
--
Giovanni Bajo