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Re: [Help-gsl] About warnings compiling GSL

From: Brian Gough
Subject: Re: [Help-gsl] About warnings compiling GSL
Date: Thu, 11 Jun 2009 16:49:45 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Wed, 10 Jun 2009 11:19:07 +0200,
José Luis García Pallero wrote:
> I'm a new user of GSL. I would like to be grateful his effort to all the
> library programmers. It's really a very nice piece of software and I can
> learn a lot about advanced C programming reading the code.
> I've compiled the version 1.12 of the library in Debian Sid with gcc 4.3.3
> and the flags -Wall -Wextra -Wconversion (I like no warnings in my
> programs). Attached (tar.gz folder) I send the output messages of the
> compilation and the warnings produced. I see that exists lot of warnings of
> type "conversion to X from Y may alter its value" or "...may change the
> sign" and a few messages of type "comparison between signed and unsigned..."
> Are known and assumed this warnings? Exist plans for fix them?

Most of them are harmless but there could be a few problems lurking
among them of course.  I don't plan to fix them myself so please send
a patch if you see any which can cause obvious problems.  Sometimes a
type conversion is necessary for the algorithm, so each case has to be
examined carefully rather than just changing the type to get rid of
the warning.

Brian Gough
(GSL Maintainer)

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