1 // RUN: %clang_cc1 -std=c++11 %s -verify -Wno-c++1y-extensions
2 
3 class X0 {
explicit_capture()4   void explicit_capture() {
5     int foo;
6 
7     (void)[foo, foo] () {}; // expected-error {{'foo' can appear only once}}
8     (void)[this, this] () {}; // expected-error {{'this' can appear only once}}
9     (void)[=, foo] () {}; // expected-error {{'&' must precede a capture when}}
10     (void)[=, &foo] () {};
11     (void)[=, this] () {}; // expected-warning {{C++2a extension}}
12     (void)[&, foo] () {};
13     (void)[&, &foo] () {}; // expected-error {{'&' cannot precede a capture when}}
14     (void)[&, this] () {};
15   }
16 };
17 
18 struct S2 {
19   void f(int i);
20   void g(int i);
21 };
22 
f(int i)23 void S2::f(int i) {
24   (void)[&, i]{ };
25   (void)[&, &i]{ }; // expected-error{{'&' cannot precede a capture when the capture default is '&'}}
26   (void)[=, this]{ }; // expected-warning{{C++2a extension}}
27   (void)[=]{ this->g(i); };
28   (void)[i, i]{ }; // expected-error{{'i' can appear only once in a capture list}}
29   (void)[i(0), i(1)]{ }; // expected-error{{'i' can appear only once in a capture list}}
30   (void)[i, i(1)]{ }; // expected-error{{'i' can appear only once in a capture list}}
31   (void)[i(0), i]{ }; // expected-error{{'i' can appear only once in a capture list}}
32 }
33