| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 2 | struct X { |
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| 3 | union { |
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| 4 | float f3; |
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| 5 | double d2; |
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| 6 | } named; |
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| 7 | |
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| 8 | union { |
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| 9 | int i; |
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| 10 | float f; |
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| 11 | |
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| 12 | union { |
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| 13 | float f2; |
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| 14 | double d; |
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| 15 | }; |
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| 16 | }; |
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| 17 | |
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| 18 | struct { |
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| 19 | int a; |
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| 20 | float b; |
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| 21 | }; |
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| 22 | }; |
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| 23 | |
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| 24 | void test_unqual_references(struct X x, const struct X xc) { |
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| 25 | // expected-note@-1 3{{variable 'xc' declared const here}} |
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| 26 | x.i = 0; |
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| 27 | x.f = 0.0; |
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| 28 | x.f2 = x.f; |
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| 29 | x.d = x.f; |
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| 30 | x.f3 = 0; // expected-error{{no member named 'f3'}} |
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| 31 | x.a = 0; |
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| 32 | |
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| 33 | xc.d = 0.0; // expected-error{{cannot assign to variable 'xc' with const-qualified type 'const struct X'}} |
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| 34 | xc.f = 0; // expected-error{{cannot assign to variable 'xc' with const-qualified type 'const struct X'}} |
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| 35 | xc.a = 0; // expected-error{{cannot assign to variable 'xc' with const-qualified type 'const struct X'}} |
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| 36 | } |
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| 37 | |
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| 38 | |
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| 39 | struct Redecl { |
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| 40 | int x; // expected-note{{previous declaration is here}} |
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| 41 | struct y { }; // expected-warning{{declaration does not declare anything}} |
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| 42 | |
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| 43 | union { |
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| 44 | int x; // expected-error{{member of anonymous union redeclares 'x'}} |
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| 45 | float y; |
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| 46 | double z; // expected-note{{previous declaration is here}} |
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| 47 | double zz; // expected-note{{previous declaration is here}} |
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| 48 | }; |
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| 49 | |
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| 50 | int z; // expected-error{{duplicate member 'z'}} |
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| 51 | void zz(); // expected-error{{duplicate member 'zz'}} |
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| 52 | }; |
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| 53 | |
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| 54 | union { // expected-warning{{declaration does not declare anything}} |
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| 55 | int int_val; |
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| 56 | float float_val; |
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| 57 | }; |
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| 58 | |
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| 59 | static union { // expected-warning{{declaration does not declare anything}} |
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| 60 | int int_val2; |
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| 61 | float float_val2; |
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| 62 | }; |
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| 63 | |
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| 64 | void f() { |
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| 65 | int_val2 = 0; // expected-error{{use of undeclared identifier}} |
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| 66 | float_val2 = 0.0; // expected-error{{use of undeclared identifier}} |
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| 67 | } |
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| 68 | |
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| 69 | void g() { |
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| 70 | union { // expected-warning{{declaration does not declare anything}} |
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| 71 | int i; |
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| 72 | float f2; |
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| 73 | }; |
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| 74 | i = 0; // expected-error{{use of undeclared identifier}} |
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| 75 | f2 = 0.0; // expected-error{{use of undeclared identifier}} |
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| 76 | } |
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| 77 | |
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| 78 | // <rdar://problem/6483159> |
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| 79 | struct s0 { union { int f0; }; }; |
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| 80 | |
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| 81 | // <rdar://problem/6481130> |
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| 82 | typedef struct { }; // expected-warning{{typedef requires a name}} |
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| 83 | |
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| 84 | // PR3675 |
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| 85 | struct s1 { |
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| 86 | int f0; // expected-note{{previous declaration is here}} |
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| 87 | union { |
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| 88 | int f0; // expected-error{{member of anonymous union redeclares 'f0'}} |
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| 89 | }; |
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| 90 | }; |
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| 91 | |
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| 92 | // PR3680 |
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| 93 | struct {}; // expected-warning{{declaration does not declare anything}} |
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| 94 | |
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| 95 | struct s2 { |
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| 96 | union { |
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| 97 | int a; |
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| 98 | } // expected-warning{{expected ';' at end of declaration list}} |
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| 99 | }; // expected-error{{expected member name or ';' after declaration specifiers}} |
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| 100 | |
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| 101 | // Make sure we don't a.k.a. anonymous structs. |
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| 102 | typedef struct { |
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| 103 | int x; |
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| 104 | } a_struct; |
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| 105 | int tmp = (a_struct) { .x = 0 }; // expected-error {{initializing 'int' with an expression of incompatible type 'a_struct'}} |
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| 106 | |
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| 107 | // This example comes out of the C11 standard; make sure we don't accidentally reject it. |
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| 108 | struct s { |
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| 109 | struct { int i; }; |
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| 110 | int a[]; |
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| 111 | }; |
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| 112 | |
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| 113 | // PR20930 |
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| 114 | struct s3 { |
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| 115 | struct { int A __attribute__((deprecated)); }; // expected-note {{'A' has been explicitly marked deprecated here}} |
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| 116 | }; |
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| 117 | |
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| 118 | void deprecated_anonymous_struct_member(void) { |
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| 119 | struct s3 s; |
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| 120 | s.A = 1; // expected-warning {{'A' is deprecated}} |
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| 121 | } |
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| 122 | |
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