| 1 | // RUN: %clang_cc1 %s -std=c++11 -fcxx-exceptions -fexceptions -fsyntax-only -Wignored-qualifiers -verify |
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| 2 | |
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| 3 | int test1() { |
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| 4 | throw; |
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| 5 | } |
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| 6 | |
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| 7 | // PR5071 |
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| 8 | template<typename T> T f() { } |
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| 9 | |
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| 10 | template<typename T> |
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| 11 | void g(T t) { |
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| 12 | return t * 2; // okay |
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| 13 | } |
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| 14 | |
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| 15 | template<typename T> |
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| 16 | T h() { |
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| 17 | return 17; |
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| 18 | } |
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| 19 | |
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| 20 | // Don't warn on cv-qualified class return types, only scalar return types. |
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| 21 | namespace ignored_quals { |
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| 22 | struct S {}; |
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| 23 | const S class_c(); |
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| 24 | const volatile S class_cv(); |
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| 25 | |
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| 26 | const int scalar_c(); // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 27 | int const scalar_c2(); // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 28 | |
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| 29 | const |
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| 30 | char* |
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| 31 | const // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 32 | f(); |
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| 33 | |
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| 34 | char |
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| 35 | const* |
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| 36 | const // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 37 | g(); |
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| 38 | |
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| 39 | char* const h(); // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 40 | char* volatile i(); // expected-warning{{'volatile' type qualifier on return type has no effect}} |
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| 41 | |
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| 42 | char* |
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| 43 | volatile // expected-warning{{'const volatile' type qualifiers on return type have no effect}} |
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| 44 | const |
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| 45 | j(); |
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| 46 | |
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| 47 | const volatile int scalar_cv(); // expected-warning{{'const volatile' type qualifiers on return type have no effect}} |
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| 48 | |
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| 49 | // FIXME: Maintain enough information that we can point the diagnostic at the 'volatile' keyword. |
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| 50 | const |
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| 51 | int S::* |
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| 52 | volatile |
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| 53 | mixed_ret(); // expected-warning {{'volatile' type qualifier on return type has no effect}} |
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| 54 | |
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| 55 | const int volatile // expected-warning {{'const volatile' type qualifiers on return type have no effect}} |
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| 56 | (((parens()))); |
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| 57 | |
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| 58 | _Atomic(int) atomic(); |
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| 59 | |
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| 60 | _Atomic // expected-warning {{'_Atomic' type qualifier on return type has no effect}} |
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| 61 | int |
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| 62 | atomic(); |
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| 63 | |
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| 64 | auto |
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| 65 | trailing_return_type() -> // expected-warning {{'const' type qualifier on return type has no effect}} |
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| 66 | const int; |
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| 67 | |
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| 68 | const int ret_array()[4]; // expected-error {{cannot return array}} |
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| 69 | } |
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| 70 | |
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| 71 | namespace PR9328 { |
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| 72 | typedef char *PCHAR; |
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| 73 | class Test |
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| 74 | { |
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| 75 | const PCHAR GetName() { return 0; } // expected-warning{{'const' type qualifier on return type has no effect}} |
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| 76 | }; |
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| 77 | } |
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| 78 | |
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| 79 | class foo { |
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| 80 | operator const int (); |
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| 81 | operator int * const (); |
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| 82 | }; |
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| 83 | |
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| 84 | namespace PR10057 { |
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| 85 | struct S { |
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| 86 | ~S(); |
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| 87 | }; |
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| 88 | |
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| 89 | template <class VarType> |
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| 90 | void Test(const VarType& value) { |
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| 91 | return S() = value; |
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| 92 | } |
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| 93 | } |
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| 94 | |
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| 95 | namespace return_has_expr { |
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| 96 | struct S { |
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| 97 | S() { |
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| 98 | return 42; // expected-error {{constructor 'S' should not return a value}} |
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| 99 | } |
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| 100 | ~S() { |
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| 101 | return 42; // expected-error {{destructor '~S' should not return a value}} |
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| 102 | } |
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| 103 | }; |
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| 104 | } |
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| 105 | |
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| 106 | // rdar://15366494 |
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| 107 | // pr17759 |
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| 108 | namespace ctor_returns_void { |
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| 109 | void f() {} |
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| 110 | struct S { |
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| 111 | S() { return f(); }; // expected-error {{constructor 'S' must not return void expression}} |
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| 112 | ~S() { return f(); } // expected-error {{destructor '~S' must not return void expression}} |
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| 113 | }; |
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| 114 | } |
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| 115 | |
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| 116 | void cxx_unresolved_expr() { |
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| 117 | // The use of an undeclared variable tricks clang into building a |
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| 118 | // CXXUnresolvedConstructExpr, and the missing ')' gives it an invalid source |
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| 119 | // location for its rparen. Check that emitting a diag on the range of the |
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| 120 | // expr doesn't assert. |
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| 121 | return int(undeclared, 4; // expected-error {{expected ')'}} expected-note{{to match this '('}} expected-error {{use of undeclared identifier 'undeclared'}} |
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| 122 | } |
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| 123 | |
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