| // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify |
| |
| void defargs() { |
| auto l1 = [](int i, int j = 17, int k = 18) { return i + j + k; }; |
| int i1 = l1(1); |
| int i2 = l1(1, 2); |
| int i3 = l1(1, 2, 3); |
| } |
| |
| |
| void defargs_errors() { |
| auto l1 = [](int i, |
| int j = 17, |
| int k) { }; // expected-error{{missing default argument on parameter 'k'}} |
| |
| auto l2 = [](int i, int j = i) {}; // expected-error{{default argument references parameter 'i'}} |
| |
| int foo; |
| auto l3 = [](int i = foo) {}; // expected-error{{default argument references local variable 'foo' of enclosing function}} |
| } |
| |
| struct NonPOD { |
| NonPOD(); |
| NonPOD(const NonPOD&); |
| ~NonPOD(); |
| }; |
| |
| struct NoDefaultCtor { |
| NoDefaultCtor(const NoDefaultCtor&); // expected-note{{candidate constructor}} \ |
| // expected-note{{candidate constructor not viable: requires 1 argument, but 0 were provided}} |
| ~NoDefaultCtor(); |
| }; |
| |
| template<typename T> |
| void defargs_in_template_unused(T t) { |
| auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} |
| l1(t); |
| } |
| |
| template void defargs_in_template_unused(NonPOD); |
| template void defargs_in_template_unused(NoDefaultCtor); // expected-note{{in instantiation of function template specialization 'defargs_in_template_unused<NoDefaultCtor>' requested here}} |
| |
| template<typename T> |
| void defargs_in_template_used() { |
| auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} \ |
| // expected-note{{candidate function not viable: requires single argument 'value', but no arguments were provided}} \ |
| // expected-note{{conversion candidate of type 'void (*)(const NoDefaultCtor &)'}} |
| l1(); // expected-error{{no matching function for call to object of type '(lambda at }} |
| } |
| |
| template void defargs_in_template_used<NonPOD>(); |
| template void defargs_in_template_used<NoDefaultCtor>(); // expected-note{{in instantiation of function template specialization}} |
| |