llvm-project/clang/test/SemaCXX/sugared-auto.cpp

44 lines
1.1 KiB
C++

// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++20
enum class N {};
using Animal = int;
using AnimalPtr = Animal *;
using Man = Animal;
using Dog = Animal;
namespace variable {
auto x1 = Animal();
N t1 = x1; // expected-error {{lvalue of type 'Animal' (aka 'int')}}
auto x2 = AnimalPtr();
N t2 = x2; // expected-error {{lvalue of type 'AnimalPtr' (aka 'int *')}}
auto *x3 = AnimalPtr();
N t3 = x3; // expected-error {{lvalue of type 'Animal *' (aka 'int *')}}
// Each variable deduces separately.
auto x4 = Man(), x5 = Dog();
N t4 = x4; // expected-error {{lvalue of type 'Man' (aka 'int')}}
N t5 = x5; // expected-error {{lvalue of type 'Dog' (aka 'int')}}
} // namespace variable
namespace function_basic {
auto f1() { return Animal(); }
auto x1 = f1();
N t1 = x1; // expected-error {{lvalue of type 'Animal' (aka 'int')}}
decltype(auto) f2() { return Animal(); }
auto x2 = f2();
N t2 = x2; // expected-error {{lvalue of type 'Animal' (aka 'int')}}
auto x3 = [a = Animal()] { return a; }();
N t3 = x3; // expected-error {{lvalue of type 'Animal' (aka 'int')}}
} // namespace function_basic