https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93410
--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot
com> ---
On Fri, 24 Jan 2020, pinskia at gcc dot gnu.org wrote:
> I doubt GCC 9 is going to change.
Indeed. The old approach was inconsistent with normal practice, as I said
in commit fe2bc27cdb6d572da0163d77e787ba644b400753 (r276896, "Support
_Decimal* keywords for C2x."):
The _Decimal* keywords are marked with D_EXT, meaning they are not
considered keywords at all in strict conformance modes. This is
contrary to the normal practice for most implementation-namespace
keywords, which are accepted in all standards modes but with
appropriate pedwarns for older standards. This patch removes D_EXT
from those keywords so they are accepted as keywords for all
standards, consequently removing the gcc.dg/dfp/keywords-ignored-c99.c
test that is no longer valid.
But that's not the sort of change we make on past release branches.
