clang/test/SemaCXX/cxx2a-lambda-default-ctor-assign.cpp

   1 // RUN: %clang_cc1 -std=c++2a -verify %s
   2
   3 void no_capture() {
   4   auto x = [] {};
   5   decltype(x) y;
   6   x = x;
   7   x = static_cast<decltype(x)&&>(x);
   8 }
   9
  10 void capture_default(int i) {
  11   auto x = [=] {}; // expected-note 2{{candidate constructor}} expected-note 2{{lambda expression begins here}}
  12   decltype(x) y; // expected-error {{no matching constructor}}
  13   x = x; // expected-error {{cannot be assigned}}
  14   x = static_cast<decltype(x)&&>(x); // expected-error {{cannot be assigned}}
  15 }
  16
  17 void explicit_capture(int i) {
  18   auto x = [i] {}; // expected-note 2{{candidate constructor}} expected-note 2{{lambda expression begins here}}
  19   decltype(x) y; // expected-error {{no matching constructor}}
  20   x = x; // expected-error {{cannot be assigned}}
  21   x = static_cast<decltype(x)&&>(x); // expected-error {{cannot be assigned}}
  22 }