1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
2 // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify -triple i386-windows
3
defargs()4 void defargs() {
5 auto l1 = [](int i, int j = 17, int k = 18) { return i + j + k; };
6 int i1 = l1(1);
7 int i2 = l1(1, 2);
8 int i3 = l1(1, 2, 3);
9 }
10
11
defargs_errors()12 void defargs_errors() {
13 auto l1 = [](int i,
14 int j = 17,
15 int k) { }; // expected-error{{missing default argument on parameter 'k'}}
16
17 auto l2 = [](int i, int j = i) {}; // expected-error{{default argument references parameter 'i'}}
18
19 int foo;
20 auto l3 = [](int i = foo) {}; // expected-error{{default argument references local variable 'foo' of enclosing function}}
21 }
22
23 struct NonPOD {
24 NonPOD();
25 NonPOD(const NonPOD&);
26 ~NonPOD();
27 };
28
29 struct NoDefaultCtor {
30 NoDefaultCtor(const NoDefaultCtor&); // expected-note{{candidate constructor}} \
31 // expected-note{{candidate constructor not viable: requires 1 argument, but 0 were provided}}
32 ~NoDefaultCtor();
33 };
34
35 template<typename T>
defargs_in_template_unused(T t)36 void defargs_in_template_unused(T t) {
37 auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}}
38 l1(t);
39 }
40
41 template void defargs_in_template_unused(NonPOD);
42 template void defargs_in_template_unused(NoDefaultCtor); // expected-note{{in instantiation of function template specialization 'defargs_in_template_unused<NoDefaultCtor>' requested here}}
43
44 template<typename T>
defargs_in_template_used()45 void defargs_in_template_used() {
46 auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} \
47 // expected-note{{candidate function not viable: requires single argument 'value', but no arguments were provided}}
48 #if defined(_WIN32) && !defined(_WIN64)
49 // expected-note@46{{conversion candidate of type 'void (*)(const NoDefaultCtor &) __attribute__((thiscall))'}}
50 #else
51 // expected-note@46{{conversion candidate of type 'void (*)(const NoDefaultCtor &)'}}
52 #endif
53 l1(); // expected-error{{no matching function for call to object of type '(lambda at }}
54 }
55
56 template void defargs_in_template_used<NonPOD>();
57 template void defargs_in_template_used<NoDefaultCtor>(); // expected-note{{in instantiation of function template specialization}}
58
59