Re: [PATCH] Don't ICE if the Fortran FE calls some stor-layout.c etc. function that emits warning, -Wpadded fixes (PR fortran/79886)

[Thomas Koenig]

Hi Jakub,

The Fortran FE registers its own format decoder, overriding the default
one that handles what the middle-end can emit, e.g.
warning (OPT_Wpadded, "padding struct to align %q+D", field);
The C/C++ FEs are the only other ones that override the decoder, but they
do handle all the specs the generic decoder handles.

This patch chains the default decoder if the spec is not Fortran specific.

Another fix is to avoid -Wpadded warnings on every single TU when building
the IO artificial data structures.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

OK.

Thanks for the patch!

        Thomas