[Re: [GRASS5] ISO C90 does not support `long long']

GRASS GIS GRASS GIS developer
1

On Wed, 2006-02-01 at 10:13 +0100, Markus Neteler wrote:

Hi,

using the "-pedantic" gcc flag, I get this message:

include/grass/dgl/type.h:66: warning: ISO C90 does not support `long long'

How to fix that line?

It's a pitfall of C90 - any integer type larger than long is not
supported. FYI, this also spells doom for large file support, too.

What minimal coding standards does GRASS conform to? ANSI C (C89-C90)?
Unless there is a quick workaround, is there any reason for not
supporting C99?

By the looks of the vector library, it'll be difficult to fix because
they are fed to read()/write(). Perhaps it could be poorly fixed by
reading and writing two ints and splitting it into upper and lower
dwords.

My $0.02 (and falling)

Glynn?

--
Brad Douglas <rez@touchofmadness.com> KB8UYR
Address: 37.49,-121.92 / WGS84 National Map Corps #TNMC-3785
GRASS GIS Developer

2

Brad Douglas wrote:

> using the "-pedantic" gcc flag, I get this message:
>
> include/grass/dgl/type.h:66: warning: ISO C90 does not support `long long'
>
> How to fix that line?

It's a pitfall of C90 - any integer type larger than long is not
supported. FYI, this also spells doom for large file support, too.

What minimal coding standards does GRASS conform to? ANSI C (C89-C90)?
Unless there is a quick workaround, is there any reason for not
supporting C99?

It isn't a question of "supporting" C99, it's a question of
"requiring" C99.

We shouldn't require anything other than C89 except where necessary
(e.g. system interfaces).

--
Glynn Clements <glynn@gclements.plus.com>