1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
2 // RUN: %clang_cc1 -fsyntax-only -std=c++1z %s -verify
3 
4 void test_conversion() {
5   int (*fp1)(int) = [](int x) { return x + 1; };
6   void (*fp2)(int) = [](int x) { };
7 
8   const auto lambda = [](int x) { };
9   void (*fp3)(int) = lambda;
10 
11   volatile const auto lambda2 = [](int x) { }; // expected-note{{but method is not marked volatile}}
12   void (*fp4)(int) = lambda2; // expected-error{{no viable conversion}}
13 
14   void (*fp5)(int) noexcept = [](int x) { };
15 #if __cplusplus > 201402L
16   // expected-error@-2 {{no viable}} expected-note@-2 {{candidate}}
17   void (*fp5a)(int) noexcept = [](auto x) { };
18   // expected-error@-1 {{no viable}} expected-note@-1 {{candidate}}
19   void (*fp5b)(int) noexcept = [](auto x) noexcept { };
20 #endif
21   void (*fp6)(int) noexcept = [](int x) noexcept { };
22 }
23 
24 void test_no_conversion() {
25   int (*fp1)(int) = [=](int x) { return x + 1; }; // expected-error{{no viable conversion}}
26   void (*fp2)(int) = [&](int x) { }; // expected-error{{no viable conversion}}
27 }
28 
29 void test_wonky() {
30   const auto l = [](int x) mutable -> int { return + 1; };
31   l(17); // okay: uses conversion function
32 }
33