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// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
// RUN: %clang_cc1 -fsyntax-only -std=c++1y %s -verify -DCPP1Y
void missing_lambda_declarator() {
[](){}();
}
template<typename T> T get();
void infer_void_return_type(int i) {
if (i > 17)
return []() { }();
if (i > 11)
return []() { return; }();
return [](int x) {
switch (x) {
case 0: return get<void>();
case 1: return;
case 2: return { 1, 2.0 }; //expected-error{{cannot deduce}}
}
}(7);
}
struct X { };
X infer_X_return_type(X x) {
return [&x](int y) {
if (y > 0)
return X();
else
return x;
}(5);
}
X infer_X_return_type_2(X x) {
return [x](int y) {
if (y > 0)
return X();
else
return x; // ok even in c++11, per dr1048.
}(5);
}
struct Incomplete; // expected-note 2{{forward declaration of 'Incomplete'}}
void test_result_type(int N) { // expected-note {{declared here}}
auto l1 = [] () -> Incomplete { }; // expected-error{{incomplete result type 'Incomplete' in lambda expression}}
typedef int vla[N]; // expected-warning {{variable length arrays in C++ are a Clang extension}} \
expected-note {{function parameter 'N' with unknown value cannot be used in a constant expression}}
auto l2 = [] () -> vla { }; // expected-error{{function cannot return array type 'vla' (aka 'int[N]')}}
}
template <typename T>
void test_result_type_tpl(int N) { // expected-note 2{{declared here}}
auto l1 = []() -> T {}; // expected-error{{incomplete result type 'Incomplete' in lambda expression}}
typedef int vla[N]; // expected-warning 2{{variable length arrays in C++ are a Clang extension}} \
expected-note 2{{function parameter 'N' with unknown value cannot be used in a constant expression}}
auto l2 = []() -> vla {}; // expected-error{{function cannot return array type 'vla' (aka 'int[N]')}}
}
void test_result_type_call() {
test_result_type_tpl<Incomplete>(10); // expected-note {{requested here}}
}
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