// 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