[c++2a] Implement P0409R2 - Allow lambda capture [=,this] (by hamzasood)

This patch, by hamzasood, implements P0409R2, and allows [=, this] pre-C++2a as an extension (with appropriate warnings) for consistency.

https://reviews.llvm.org/D36572

Thanks Hamza!





git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@311224 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/clang/Basic/DiagnosticGroups.td b/include/clang/Basic/DiagnosticGroups.td
index e941d9dda2..dd0ed0b13c 100644
--- a/include/clang/Basic/DiagnosticGroups.td
+++ b/include/clang/Basic/DiagnosticGroups.td
@@ -168,6 +168,9 @@ def CXXPre14CompatPedantic : DiagGroup<"c++98-c++11-compat-pedantic",
 def CXXPre1zCompat : DiagGroup<"c++98-c++11-c++14-compat">;
 def CXXPre1zCompatPedantic : DiagGroup<"c++98-c++11-c++14-compat-pedantic",
                                        [CXXPre1zCompat]>;
+def CXXPre2aCompat : DiagGroup<"c++98-c++11-c++14-c++17-compat">;
+def CXXPre2aCompatPedantic : DiagGroup<"c++98-c++11-c++14-c++17-compat-pedantic",
+                                       [CXXPre2aCompat]>;
 
 def CXX98CompatBindToTemporaryCopy :
   DiagGroup<"c++98-compat-bind-to-temporary-copy">;
@@ -784,6 +787,10 @@ def CXX14 : DiagGroup<"c++14-extensions", [CXX14BinaryLiteral]>;
 // earlier C++ versions.
 def CXX17 : DiagGroup<"c++17-extensions">;
 
+// A warning group for warnings about using C++2a features as extensions in
+// earlier C++ versions.
+def CXX2a : DiagGroup<"c++2a-extensions">;
+
 def : DiagGroup<"c++0x-extensions", [CXX11]>;
 def : DiagGroup<"c++1y-extensions", [CXX14]>;
 def : DiagGroup<"c++1z-extensions", [CXX17]>;