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Re: [Bug-gsl] Invalid memory accesses in gsl-1.6/vector/test.c

From: Julian Seward
Subject: Re: [Bug-gsl] Invalid memory accesses in gsl-1.6/vector/test.c
Date: Thu, 7 Jul 2005 15:13:31 +0100
User-agent: KMail/1.8.1

> Thanks for the bug report, you're right -- I accidentally introduced
> an error in the vector test program for gsl-1.6 (the library itself is
> not affected).  See patch below if you are interested.

Thanks.  I am.

gsl's test suite is really outstanding, and has proved invaluable
in making Valgrind work reliably -- a side effect I'm sure you
didn't plan on.  Gold stars to all concerned.

>  > Is this a known problem?  Has anyone [apart from me] run the gsl-1.6
>  > test suite though a memory debugging tool like Valgrind or Purify?
> I usually test the releases with the bounds-checking version of gcc,
> but it missed this one.  I will have to start checking with valgrind
> as well ;-)

You should.  Valgrind also tells you about computations which depend
on undefined values, which is something bounds-checking gcc can't do,
as far as I know.  Besides, Valgrind saves you the hassle of recompiling
the whole thing.


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