| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 2 | |
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| 3 | void *test1(void) { return 0; } |
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| 4 | |
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| 5 | void test2 (const struct {int a;} *x) { |
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| 6 | // expected-note@-1 {{variable 'x' declared const here}} |
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| 7 | |
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| 8 | x->a = 10; |
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| 9 | // expected-error-re@-1 {{cannot assign to variable 'x' with const-qualified type 'const struct (anonymous struct at {{.*}}assign.c:5:19) *'}} |
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| 10 | } |
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| 11 | |
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| 12 | typedef int arr[10]; |
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| 13 | void test3() { |
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| 14 | const arr b; // expected-note {{variable 'b' declared const here}} |
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| 15 | const int b2[10]; // expected-note {{variable 'b2' declared const here}} |
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| 16 | b[4] = 1; // expected-error {{cannot assign to variable 'b' with const-qualified type 'const arr' (aka 'int const[10]')}} |
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| 17 | b2[4] = 1; // expected-error {{cannot assign to variable 'b2' with const-qualified type 'const int [10]'}} |
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| 18 | } |
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| 19 | |
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| 20 | typedef struct I { |
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| 21 | const int a; // expected-note 4{{nested data member 'a' declared const here}} \ |
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| 22 | expected-note 6{{data member 'a' declared const here}} |
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| 23 | } I; |
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| 24 | typedef struct J { |
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| 25 | struct I i; |
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| 26 | } J; |
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| 27 | typedef struct K { |
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| 28 | struct J *j; |
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| 29 | } K; |
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| 30 | |
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| 31 | void testI(struct I i1, struct I i2) { |
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| 32 | i1 = i2; // expected-error {{cannot assign to variable 'i1' with const-qualified data member 'a'}} |
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| 33 | } |
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| 34 | void testJ1(struct J j1, struct J j2) { |
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| 35 | j1 = j2; // expected-error {{cannot assign to variable 'j1' with nested const-qualified data member 'a'}} |
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| 36 | } |
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| 37 | void testJ2(struct J j, struct I i) { |
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| 38 | j.i = i; // expected-error {{cannot assign to non-static data member 'i' with const-qualified data member 'a'}} |
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| 39 | } |
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| 40 | void testK1(struct K k, struct J j) { |
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| 41 | *(k.j) = j; // expected-error {{cannot assign to lvalue with nested const-qualified data member 'a'}} |
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| 42 | } |
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| 43 | void testK2(struct K k, struct I i) { |
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| 44 | k.j->i = i; // expected-error {{cannot assign to non-static data member 'i' with const-qualified data member 'a'}} |
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| 45 | } |
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| 46 | |
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| 47 | void testI_(I i1, I i2) { |
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| 48 | i1 = i2; // expected-error {{cannot assign to variable 'i1' with const-qualified data member 'a'}} |
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| 49 | } |
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| 50 | void testJ1_(J j1, J j2) { |
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| 51 | j1 = j2; // expected-error {{cannot assign to variable 'j1' with nested const-qualified data member 'a'}} |
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| 52 | } |
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| 53 | void testJ2_(J j, I i) { |
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| 54 | j.i = i; // expected-error {{cannot assign to non-static data member 'i' with const-qualified data member 'a'}} |
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| 55 | } |
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| 56 | void testK1_(K k, J j) { |
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| 57 | *(k.j) = j; // expected-error {{cannot assign to lvalue with nested const-qualified data member 'a'}} |
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| 58 | } |
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| 59 | void testK2_(K k, I i) { |
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| 60 | k.j->i = i; // expected-error {{cannot assign to non-static data member 'i' with const-qualified data member 'a'}} |
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| 61 | } |
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| 62 | |
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| 63 | // PR39946: Recursive checking of hasConstFields caused stack overflow. |
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| 64 | struct L { // expected-note {{definition of 'struct L' is not complete until the closing '}'}} |
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| 65 | struct L field; // expected-error {{field has incomplete type 'struct L'}} |
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| 66 | }; |
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| 67 | void testL(struct L *l) { |
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| 68 | *l = 0; // expected-error {{assigning to 'struct L' from incompatible type 'int'}} |
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| 69 | } |
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| 70 | |
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| 71 | // Additionally, this example overflowed the stack when figuring out the field. |
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| 72 | struct M1; // expected-note {{forward declaration of 'struct M1'}} |
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| 73 | struct M2 { |
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| 74 | //expected-note@+1 {{nested data member 'field' declared const here}} |
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| 75 | const struct M1 field; // expected-error {{field has incomplete type 'const struct M1'}} |
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| 76 | }; |
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| 77 | struct M1 { |
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| 78 | struct M2 field; |
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| 79 | }; |
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| 80 | |
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| 81 | void testM(struct M1 *l) { |
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| 82 | *l = 0; // expected-error {{cannot assign to lvalue with nested const-qualified data member 'field'}} |
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| 83 | } |
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| 84 | |
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| 85 | struct N1; // expected-note {{forward declaration of 'struct N1'}} |
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| 86 | struct N2 { |
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| 87 | struct N1 field; // expected-error {{field has incomplete type 'struct N1'}} |
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| 88 | }; |
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| 89 | struct N1 { |
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| 90 | struct N2 field; |
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| 91 | }; |
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| 92 | |
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| 93 | void testN(struct N1 *l) { |
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| 94 | *l = 0; // expected-error {{assigning to 'struct N1' from incompatible type 'int'}} |
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| 95 | } |
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| 96 | |
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