llvm-for-llvmta/tools/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p8.cpp

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2022-04-25 13:02:35 +02:00
// RUN: %clang_cc1 -std=c++11 %s -verify -Wno-c++14-extensions
class X0 {
void explicit_capture() {
int foo;
(void)[foo, foo] () {}; // expected-error {{'foo' can appear only once}}
(void)[this, this] () {}; // expected-error {{'this' can appear only once}}
(void)[=, foo] () {}; // expected-error {{'&' must precede a capture when}}
(void)[=, &foo] () {};
(void)[=, this] () {}; // expected-warning {{C++20 extension}}
(void)[&, foo] () {};
(void)[&, &foo] () {}; // expected-error {{'&' cannot precede a capture when}}
(void)[&, this] () {};
}
};
struct S2 {
void f(int i);
void g(int i);
};
void S2::f(int i) {
(void)[&, i]{ };
(void)[&, &i]{ }; // expected-error{{'&' cannot precede a capture when the capture default is '&'}}
(void)[=, this]{ }; // expected-warning{{C++20 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}}
(void)[i, i(1)]{ }; // expected-error{{'i' can appear only once in a capture list}}
(void)[i(0), i]{ }; // expected-error{{'i' can appear only once in a capture list}}
}