[PATCH 2/4] windows-nat: Replace __COPY_CONTEXT_SIZE conditional with __CYGWIN__

[Joel Brobecker]

> Replace __COPY_CONTEXT_SIZE conditional with __CYGWIN__
> 
> __COPY_CONTEXT_SIZE was added to Cygwin's headers in 2006.
> 
> Versions of Cygwin which don't define __COPY_CONTEXT_SIZE are long obsolete.
> 
> Also see the thread starting at
> https://sourceware.org/ml/gdb-patches/2015-03/msg00989.html for some discussion
> 
> Note that __COPY_CONTEXT_SIZE should just be sizeof(CONTEXT) (which is a
> platform constant), but isn't due to historical mistakes in Cygwin headers.
> 
> gdb/ChangeLog:
> 
> 2015-06-03  Jon Turney  <jon.turney@dronecode.org.uk>
> 
> 	* windows-nat.c (do_windows_fetch_inferior_registers)
> 	(handle_output_debug_string): Replace __COPY_CONTEXT_SIZE
> 	conditional with __CYGWIN__.

FWIW, I don't mind this patch, but I don't necessarily see what
we are gaining from it. Can you explain?

Thanks,
-- 
Joel