[PATCH util/macros] Drop -fno-strict-aliasing from XORG_CWARNFLAGS

[Adam Jackson]

On Wed, 2017-12-13 at 11:31 -0800, Keith Packard wrote:
> Adam Jackson <ajax at redhat.com> writes:
> 
> > This has been "deprecated" since 2011, but because it is still
> > referenced from XORG_DEFAULT_OPTIONS nothing has ever been updated to
> > get strict aliasing right. Let's fix that.
> 
> I don't understand this -- are you getting rid of this option from our
> compiles or not?

I mean, the lines in the diff start with "-".  "Let's fix that" here
means "let's build normally and see what falls out".

> I can assure you that our code is unlikely to work with
> out it.

xserver still passes make check when built without it. Well, the meson
build does anyway, I haven't gotten around to trying it with the
autotools build yet, nor adding -Werror=strict-aliasing and rebuilding
the world, but that would obviously be prerequisite for releasing a
version of util-macros with this change in it.

- ajax