Author: Vlad Serebrennikov Date: 2024-07-06T15:52:19+04:00 New Revision: be3a8b8d94608746b22cb0cf3fc03af33b7d8648
URL: https://github.com/llvm/llvm-project/commit/be3a8b8d94608746b22cb0cf3fc03af33b7d8648 DIFF: https://github.com/llvm/llvm-project/commit/be3a8b8d94608746b22cb0cf3fc03af33b7d8648.diff LOG: [clang] Add C++26 diagnostics to compatibility diagnosic groups (#97806) This patch adds `CXXPre26Compat` and `CXXPre26CompatPedantic` groups (which are concerned with new features not available in older language modes) to `CXX98Compat`, etc. This way, if user has `-Wc++20-compat` and they use pack indexing, they will be warned. Ideally this should have been done when C++26 groups were created, but we shipped two releases of Clang since then. Added: Modified: clang/docs/ReleaseNotes.rst clang/include/clang/Basic/DiagnosticGroups.td Removed: ################################################################################ diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index d60c6fbf15d56..39187078d5786 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -439,8 +439,11 @@ New Compiler Flags Matches MSVC behaviour by defining ``__STDC__`` to ``1`` when MSVC compatibility mode is used. It has no effect for C++ code. +- ``-Wc++23-compat`` group was added to help migrating existing codebases + to C++23. + - ``-Wc++2c-compat`` group was added to help migrating existing codebases - to C++26. + to upcoming C++26. Deprecated Compiler Flags ------------------------- @@ -480,6 +483,10 @@ Modified Compiler Flags evaluating to ``true`` and an empty body such as ``while(1);``) are considered infinite, even when the ``-ffinite-loop`` flag is set. +- Diagnostics groups about compatibility with a particular C++ Standard version + now include dianostics about C++26 features that are not present in older + versions. + Removed Compiler Flags ------------------------- diff --git a/clang/include/clang/Basic/DiagnosticGroups.td b/clang/include/clang/Basic/DiagnosticGroups.td index 1b25cf36dd4f8..2241f8481484e 100644 --- a/clang/include/clang/Basic/DiagnosticGroups.td +++ b/clang/include/clang/Basic/DiagnosticGroups.td @@ -344,7 +344,8 @@ def CXX98Compat : DiagGroup<"c++98-compat", CXXPre14Compat, CXXPre17Compat, CXXPre20Compat, - CXXPre23Compat]>; + CXXPre23Compat, + CXXPre26Compat]>; // Warnings for C++11 features which are Extensions in C++98 mode. def CXX98CompatPedantic : DiagGroup<"c++98-compat-pedantic", [CXX98Compat, @@ -353,7 +354,8 @@ def CXX98CompatPedantic : DiagGroup<"c++98-compat-pedantic", CXXPre14CompatPedantic, CXXPre17CompatPedantic, CXXPre20CompatPedantic, - CXXPre23CompatPedantic]>; + CXXPre23CompatPedantic, + CXXPre26CompatPedantic]>; def CXX11NarrowingConstReference : DiagGroup<"c++11-narrowing-const-reference">; def CXX11Narrowing : DiagGroup<"c++11-narrowing", [CXX11NarrowingConstReference]>; @@ -384,42 +386,52 @@ def CXX11Compat : DiagGroup<"c++11-compat", CXXPre14Compat, CXXPre17Compat, CXXPre20Compat, - CXXPre23Compat]>; + CXXPre23Compat, + CXXPre26Compat]>; def : DiagGroup<"c++0x-compat", [CXX11Compat]>; def CXX11CompatPedantic : DiagGroup<"c++11-compat-pedantic", [CXX11Compat, CXXPre14CompatPedantic, CXXPre17CompatPedantic, CXXPre20CompatPedantic, - CXXPre23CompatPedantic]>; + CXXPre23CompatPedantic, + CXXPre26CompatPedantic]>; def CXX14Compat : DiagGroup<"c++14-compat", [CXXPre17Compat, CXXPre20Compat, - CXXPre23Compat]>; + CXXPre23Compat, + CXXPre26Compat]>; def CXX14CompatPedantic : DiagGroup<"c++14-compat-pedantic", [CXX14Compat, CXXPre17CompatPedantic, CXXPre20CompatPedantic, - CXXPre23CompatPedantic]>; + CXXPre23CompatPedantic, + CXXPre26CompatPedantic]>; def CXX17Compat : DiagGroup<"c++17-compat", [DeprecatedRegister, DeprecatedIncrementBool, CXX17CompatMangling, CXXPre20Compat, - CXXPre23Compat]>; + CXXPre23Compat, + CXXPre26Compat]>; def CXX17CompatPedantic : DiagGroup<"c++17-compat-pedantic", [CXX17Compat, CXXPre20CompatPedantic, - CXXPre23CompatPedantic]>; + CXXPre23CompatPedantic, + CXXPre26CompatPedantic]>; def : DiagGroup<"c++1z-compat", [CXX17Compat]>; -def CXX20Compat : DiagGroup<"c++20-compat", [CXXPre23Compat]>; +def CXX20Compat : DiagGroup<"c++20-compat", [CXXPre23Compat, + CXXPre26Compat]>; def CXX20CompatPedantic : DiagGroup<"c++20-compat-pedantic", [CXX20Compat, - CXXPre23CompatPedantic]>; + CXXPre23CompatPedantic, + CXXPre26CompatPedantic]>; def : DiagGroup<"c++2a-compat", [CXX20Compat]>; def : DiagGroup<"c++2a-compat-pedantic", [CXX20CompatPedantic]>; +def CXX23Compat : DiagGroup<"c++23-compat", [CXXPre26Compat]>; + def CXX26Compat : DiagGroup<"c++2c-compat", [DeleteIncomplete]>; def ExitTimeDestructors : DiagGroup<"exit-time-destructors">; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
