[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!

llvm-svn: 311224

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p8.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p8.cpp
index b9b8cd76c01..1cc1fd974ca 100644
--- a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p8.cpp
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p8.cpp
@@ -8,7 +8,7 @@ class X0 {
     (void)[this, this] () {}; // expected-error {{'this' can appear only once}}
     (void)[=, foo] () {}; // expected-error {{'&' must precede a capture when}}
     (void)[=, &foo] () {};
-    (void)[=, this] () {}; // expected-error {{'this' cannot be explicitly captured}}
+    (void)[=, this] () {}; // expected-warning {{C++2a extension}}
     (void)[&, foo] () {};
     (void)[&, &foo] () {}; // expected-error {{'&' cannot precede a capture when}} 
     (void)[&, this] () {};
@@ -23,7 +23,7 @@ struct S2 {
 void S2::f(int i) {
   (void)[&, i]{ };
   (void)[&, &i]{ }; // expected-error{{'&' cannot precede a capture when the capture default is '&'}}
-  (void)[=, this]{ }; // expected-error{{'this' cannot be explicitly captured}}
+  (void)[=, this]{ }; // expected-warning{{C++2a extension}}
   (void)[=]{ this->g(i); };
   (void)[i, i]{ }; // expected-error{{'i' can appear only once in a capture list}}
   (void)[i(0), i(1)]{ }; // expected-error{{'i' can appear only once in a capture list}}