Default warnings and useless extensions (e.g. arithmetic on void *)

[Richard Guenther]

On Mon, Jun 9, 2008 at 3:46 PM, Vincent Lefevre <vincent+gcc@vinc17.org> wrote:
> Is there any reason why "gcc -Wall" doesn't emit warnings by default
> on some useless extensions such as pointer arithmetic on (void *)?

Use -pedantic to warn about extensions.  It doesn't make sense to
warn for extensions if they are not deprecated.  After all they are extensions.

Richard.