Re: assign numbers to warnings; treat selected warnings as errors

["Manuel López-Ibáñez" <lopezibanez at gmail dot com>]

On 20/04/07, Joseph S. Myers <joseph@codesourcery.com> wrote:
> On Fri, 20 Apr 2007, Thomas Koenig wrote:
>
> > This does sound like a useful feature, not only for
> > gfortran, but for all of gcc.
>
> GCC has -Werror=foo in 4.2 or later (with warning option names, not
> numbers).  That gives you the command-line syntax and semantics; to use it
> in gfortran, you'd need either to use the common diagnostics
> infrastructure or add the feature to the Fortran-specific diagnostics
> code.

Not only that, but you can do -Werror -Wno-error=foo, to get errors
for everything except -Wfoo. Also, you can do
-fdiagnostics-show-options to find out which -Wfoo option generates
each warning message. It is unfortunate that this is missing from
gcc-4.2/changes.html.

Cheers,

Manuel.