https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90709
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |meta-bug
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-06-01
Depends on| |78352, 90707, 90708
Ever confirmed|0 |1
--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> ---
The short list of major factors:
1. (78352) GCC lacks support for the Apple "blocks" extension to the C family
of languages.
- block syntax appears without guards in many places in modern Darwin system
headers.
2. (90707) - GNU Objective C (C++) does not support nullability syntax.
- nullability introduces new keywords for objective c and, unlike the
equivalent markup in C/C++, these cannot be worked around with preprocessor
hacks,
3. (90708) - GNU Objective C (C++) does not support lightweight generics.
- likewise this is an invasive syntax change that can't be worked around.
4. instancetype keyword (partially implemented, at least we can consume the
syntax).
-----
However, taking these points aside - for the APIs currently implemented by GNNU
objective c - we should seek a mechanism to monitor for regressions.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78352
[Bug 78352] GCC lacks support for the Apple "blocks" extension to the C family
of languages
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90707
[Bug 90707] GNU Objective C (C++) does not support nullability syntax.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90708
[Bug 90708] GNU Objective C (C++) does not support lightweight generics.
