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()4void 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()12void 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)36void defargs_in_template_unused(T t) { 37 auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} \ 38 // expected-note {{in instantiation of default function argument expression for 'operator()<NoDefaultCtor>' required here}} 39 l1(t); 40 } 41 42 template void defargs_in_template_unused(NonPOD); 43 template void defargs_in_template_unused(NoDefaultCtor); // expected-note{{in instantiation of function template specialization 'defargs_in_template_unused<NoDefaultCtor>' requested here}} 44 45 template<typename T> defargs_in_template_used()46void defargs_in_template_used() { 47 auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}} \ 48 // expected-note {{in instantiation of default function argument expression for 'operator()<NoDefaultCtor>' required here}} 49 l1(); 50 } 51 52 template void defargs_in_template_used<NonPOD>(); 53 template void defargs_in_template_used<NoDefaultCtor>(); // expected-note{{in instantiation of function template specialization}} 54 55