c++: Some C++20 and C++23 option help fixes

I've noticed we still refer to C++20 as draft standard, and there is a pasto
in C++23 description.

2021-01-28  Jakub Jelinek  <jakub@redhat.com>

	* c.opt (-std=c++2a, -std=c++20, -std=gnu++2a, -std=gnu++20): Remove
	draft from description.
	(-std=c++2b): Fix a pasto, 2020 -> 2023.

diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index b729be7f40eb4cd5ac98b68f1d12955a844274b5..b209d46d32b37d625a398bef09879240db9927ba 100644 (file)
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -2208,15 +2208,15 @@ Conform to the ISO 2017 C++ standard.
 
 std=c++2a
 C++ ObjC++ Alias(std=c++20) Undocumented
-Conform to the ISO 2020 C++ draft standard (experimental and incomplete support).
+Conform to the ISO 2020 C++ standard (experimental and incomplete support).
 
 std=c++20
 C++ ObjC++
-Conform to the ISO 2020 C++ draft standard (experimental and incomplete support).
+Conform to the ISO 2020 C++ standard (experimental and incomplete support).
 
 std=c++2b
 C++ ObjC++ Alias(std=c++23)
-Conform to the ISO 2020 C++ draft standard (experimental and incomplete support).
+Conform to the ISO 2023 C++ draft standard (experimental and incomplete support).
 
 std=c++23
 C++ ObjC++ Undocumented
@@ -2294,11 +2294,11 @@ Conform to the ISO 2017 C++ standard with GNU extensions.
 
 std=gnu++2a
 C++ ObjC++ Alias(std=gnu++20) Undocumented
-Conform to the ISO 2020 C++ draft standard with GNU extensions (experimental and incomplete support).
+Conform to the ISO 2020 C++ standard with GNU extensions (experimental and incomplete support).
 
 std=gnu++20
 C++ ObjC++
-Conform to the ISO 2020 C++ draft standard with GNU extensions (experimental and incomplete support).
+Conform to the ISO 2020 C++ standard with GNU extensions (experimental and incomplete support).
 
 std=gnu++2b
 C++ ObjC++ Alias(std=gnu++23)