[Bug c++/88075] [feature-request] allow "concept" instead of "concept bool" with -fconcepts

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88075

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Nov  5 11:46:54 2019
New Revision: 277825

URL: https://gcc.gnu.org/viewcvs?rev=277825&root=gcc&view=rev
Log:
        PR c++/88075 - Don't require 'bool' in a concept definition.

        * parser.c (cp_parser_decl_specifier_seq): Support C++20
        concept-definition syntax without 'bool'.

Added:
    branches/gcc-8-branch/gcc/testsuite/g++.dg/concepts/no-bool1.C
Modified:
    branches/gcc-8-branch/gcc/cp/ChangeLog
    branches/gcc-8-branch/gcc/cp/parser.c