Building today's snapshot of GDB with MinGW

[Eli Zaretskii]

> Date: Wed, 01 Jul 2020 18:09:11 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: gdb-patches@sourceware.org, brobecker@adacore.com, tromey@adacore.com
> 
> > We would not expect GDB to complain for Windows on i386:x86-64.
> > 
> > The first thing I would do is make sure that the function _initialize_amd64_windows_tdep
> > gets executed at startup in your GDB.  This is the function that registers a handler for
> > the tuple (i386:x86-64, Windows).
> 
> Thanks, I will take a look there and report what I see.

I started looking at the code, but then I had a eureka moment.  You
mentioned _initialize_amd64_windows_tdep, so I presume you assumed my
build is a 64-bit one?  It isn't: it's a 3--bit build, and thus
_initialize_amd64_windows_tdep is not even compiled into the binary.

Given that my build is a 32-bit one, it sounds expected to see
warnings I cited, as they all complain about 64-bit architectures,
right?

Incidentally, I wonder why the gdbarch selftest is trying
architectures that are not supported and not even compiled in.  What
is the purpose of doing that?

Thanks.