changelog, docs, C++03 tests

Author: cor3ntin

clang/docs/LanguageExtensions.rst

@@ -1645,6 +1645,7 @@ Static assert with user-generated message    __cpp_static_assert >= 202306L   C+
 Pack Indexing                                __cpp_pack_indexing              C++26         C++03
 ``= delete ("should have a reason");``       __cpp_deleted_function           C++26         C++03
 Variadic Friends                             __cpp_variadic_friend            C++26         C++03
+Trivial Relocatability                       __cpp_trivial_relocatability     C++26         C++03
 -------------------------------------------- -------------------------------- ------------- -------------
 Designated initializers (N494)                                                C99           C89
 Array & element qualification (N2607)                                         C23           C89

clang/docs/ReleaseNotes.rst

@@ -72,6 +72,8 @@ C++2c Feature Support
 ^^^^^^^^^^^^^^^^^^^^^
 
 - Implemented `P1061R10 Structured Bindings can introduce a Pack <https://wg21.link/P1061R10>`_.
+- Implemented `P2786R13 Trivial Relocatability <https://wg21.link/P2786R13>`_.
+
 
 C++23 Feature Support
 ^^^^^^^^^^^^^^^^^^^^^

clang/test/Parser/cxx2c-trivially-relocatable.cpp

@@ -1,34 +1,42 @@
-// RUN: %clang_cc1 -std=c++2c -verify=expected -fsyntax-only %s
+// RUN: %clang_cc1 -std=c++03 -verify=expected,cxx11,cxx03 -fsyntax-only %s
 // RUN: %clang_cc1 -std=c++11 -verify=expected,cxx11 -fsyntax-only %s
-
+// RUN: %clang_cc1 -std=c++2c -verify=expected -fsyntax-only %s
 
 
 class A trivially_relocatable_if_eligible {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
 class E final trivially_relocatable_if_eligible {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-2 {{'final' keyword is a C++11 extension}}
 class G trivially_relocatable_if_eligible final{};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
-class I trivially_relocatable_if_eligible trivially_relocatable_if_eligible final {}; // expected-error {{class already marked 'trivially_relocatable_if_eligible'}}
-// cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-2 {{'final' keyword is a C++11 extension}}
+class I trivially_relocatable_if_eligible trivially_relocatable_if_eligible final {};
+// expected-error@-1 {{class already marked 'trivially_relocatable_if_eligible'}}
+// cxx11-warning@-2 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-3 {{'final' keyword is a C++11 extension}}
 class trivially_relocatable_if_eligible trivially_relocatable_if_eligible {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
-
 class J replaceable_if_eligible{};
 // cxx11-warning@-1 {{'replaceable_if_eligible' keyword is a C++2c extension}}
-class K replaceable_if_eligible replaceable_if_eligible {}; // expected-error {{class already marked 'replaceable_if_eligible'}}
-// cxx11-warning@-1 {{'replaceable_if_eligible' keyword is a C++2c extension}}
+class K replaceable_if_eligible replaceable_if_eligible {};
+// expected-error@-1 {{class already marked 'replaceable_if_eligible'}}
+// cxx11-warning@-2 {{'replaceable_if_eligible' keyword is a C++2c extension}}
 class replaceable_if_eligible replaceable_if_eligible {};
 // cxx11-warning@-1 {{'replaceable_if_eligible' keyword is a C++2c extension}}
 class L replaceable_if_eligible trivially_relocatable_if_eligible final {};
 // cxx11-warning@-1 {{'replaceable_if_eligible' keyword is a C++2c extension}}
 // cxx11-warning@-2 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-3 {{'final' keyword is a C++11 extension}}
 class M replaceable_if_eligible final trivially_relocatable_if_eligible {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
 // cxx11-warning@-2 {{'replaceable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-3 {{'final' keyword is a C++11 extension}}
 class N final trivially_relocatable_if_eligible replaceable_if_eligible {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
 // cxx11-warning@-2 {{'replaceable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-3 {{'final' keyword is a C++11 extension}}
 class O trivially_relocatable_if_eligible replaceable_if_eligible final {};
 // cxx11-warning@-1 {{'trivially_relocatable_if_eligible' keyword is a C++2c extension}}
 // cxx11-warning@-2 {{'replaceable_if_eligible' keyword is a C++2c extension}}
+// cxx03-warning@-3 {{'final' keyword is a C++11 extension}}