[Freeciv-Dev] Re: Compiler-warnings

[Stepan Roh <stepan@xxxxxxxx>]

On Wed, 24 Jan 2001, Raimar Falke wrote:

> gcc -Wall gives:
> a.c: In function `main':
> a.c:10: warning: array subscript has type `char'
>
> So it looks like gcc will accept signed or unsigned char as array
> subscripts. It can also be done using int. Both solution will silence
> the warning but maybe there is also something else to consider.

There is a gcc option -Wchar-subscripts (citation from info docs
follows), which is enabled with -Wall (and can be disabled with
-Wno-char-subscripts).

`-Wchar-subscripts'
     Warn if an array subscript has type `char'.  This is a common cause
     of error, as programmers often forget that this type is signed on
     some machines.

Have a nice day.

Stepan Roh