--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp2a/lambda-this1.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,51 @@
+// P0806R2
+// { dg-do compile }
+// { dg-options "-std=c++2a" }
+
+struct X {
+  int x;
+  void foo (int n) {
+    auto a1 = [=] { x = n; }; // { dg-warning "implicit capture" }
+    auto a2 = [=, this] { x = n; };
+    auto a3 = [=, *this]() mutable { x = n; };
+    auto a4 = [&] { x = n; };
+    auto a5 = [&, this] { x = n; };
+    auto a6 = [&, *this]() mutable { x = n; };
+
+    auto a7 = [=] { // { dg-warning "implicit capture" }
+      auto a = [=] { // { dg-warning "implicit capture" }
+	 auto a2 = [=] { x = n; }; // { dg-warning "implicit capture" }
+      };
+    };
+
+    auto a8 = [=, this] {
+      auto a = [=, this] {
+	 auto a2 = [=, this] { x = n; };
+      };
+    };
+
+    auto a9 = [=, *this]() mutable {
+      auto a = [=, *this]() mutable {
+	 auto a2 = [=, *this]() mutable { x = n; };
+      };
+    };
+
+    auto a10 = [&] {
+      auto a = [&] {
+	 auto a2 = [&] { x = n; };
+      };
+    };
+
+    auto a11 = [&, this] {
+      auto a = [&, this] {
+	 auto a2 = [&, this] { x = n; };
+      };
+    };
+
+    auto a12 = [&, *this]() mutable {
+      auto a = [&, *this]() mutable {
+	 auto a2 = [&, *this]() mutable { x = n; };
+      };
+    };
+  }
+};