Re: pdp11: Fix warnings to allow compilation with a recent GCC and --enable-werror-always

[Koning, Paul via Gcc-patches]

> On Jun 28, 2021, at 11:33 AM, Jan-Benedict Glaw <jbg...@lug-owl.de> wrote:
> 
> Hi Paul!
> 
> I'd like to install this patch to let the pdp11-aout configuration
> build again with eg.
> 
> ../gcc/configure --target=pdp11-aout --enable-werror-always \
>       --enable-languages=all --disable-gcov --disable-shared \
>       --disable-threads --without-headers \
>       --prefix=/var/lib/laminar/run/gcc-pdp11-aout/5/toolchain-install
> 
> No testsuite (yet? Maybe I'd add a bit), but re-checked some Hello
> World'ish code for no changes and it still runs on a SIMH pdp11.
> ...
> Okay for master?
> 
> MfG, JBG

Yes, thanks!

The test suite "compile" section isn't completely clean yet but it mostly 
works.  Execution is more problematic at this point.

        paul