[Bug target/80556] [8 Regression] bootstrap failure for Ada compiler

["iains at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80556

--- Comment #48 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to simon from comment #46)
> I posted my darwin.h patch at
> https://gcc.gnu.org/ml/gcc-patches/2017-09/msg00045.html on 1 September -
> hasn’t attracted any notice yet.

Thanks for the patch Simon, and apologies that no-one has reviewed it yet.

I am trying to catch up on the state of this (and other pending Darwin issues).

As it is, the patch needs some more work, since the unwinder needs to come from
different places in different versions of Darwin.  As I read it, you've made
the change unconditional which will most likely break earlier Darwin versions.

Currently, I'm trying to reproduce the various issues, and will have some
suggestions for amendment of the patch once I can get Ada to bootstrap.  Once
that's happening, I'll reply to the @patches post.