| 1 | // RUN: %clang_cc1 -std=c11 -fsyntax-only -verify %s |
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| 2 | |
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| 3 | void g(void); |
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| 4 | |
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| 5 | void foo(int n) { |
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| 6 | (void) _Generic(0, |
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| 7 | struct A: 0, // expected-error {{type 'struct A' in generic association incomplete}} |
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| 8 | void(): 0, // expected-error {{type 'void ()' in generic association not an object type}} |
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| 9 | int[n]: 0); // expected-error {{type 'int [n]' in generic association is a variably modified type}} |
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| 10 | |
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| 11 | (void) _Generic(0, |
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| 12 | void (*)(): 0, // expected-note {{compatible type 'void (*)()' specified here}} |
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| 13 | void (*)(void): 0); // expected-error {{type 'void (*)(void)' in generic association compatible with previously specified type 'void (*)()'}} |
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| 14 | |
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| 15 | (void) _Generic((void (*)()) 0, // expected-error {{controlling expression type 'void (*)()' compatible with 2 generic association types}} |
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| 16 | void (*)(int): 0, // expected-note {{compatible type 'void (*)(int)' specified here}} |
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| 17 | void (*)(void): 0); // expected-note {{compatible type 'void (*)(void)' specified here}} |
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| 18 | |
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| 19 | (void) _Generic(0, // expected-error {{controlling expression type 'int' not compatible with any generic association type}} |
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| 20 | char: 0, short: 0, long: 0); |
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| 21 | |
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| 22 | int a1[_Generic(0, int: 1, short: 2, float: 3, default: 4) == 1 ? 1 : -1]; |
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| 23 | int a2[_Generic(0, default: 1, short: 2, float: 3, int: 4) == 4 ? 1 : -1]; |
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| 24 | int a3[_Generic(0L, int: 1, short: 2, float: 3, default: 4) == 4 ? 1 : -1]; |
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| 25 | int a4[_Generic(0L, default: 1, short: 2, float: 3, int: 4) == 1 ? 1 : -1]; |
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| 26 | int a5[_Generic(0, int: 1, short: 2, float: 3) == 1 ? 1 : -1]; |
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| 27 | int a6[_Generic(0, short: 1, float: 2, int: 3) == 3 ? 1 : -1]; |
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| 28 | |
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| 29 | int a7[_Generic("test", char *: 1, default: 2) == 1 ? 1 : -1]; |
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| 30 | int a8[_Generic(g, void (*)(void): 1, default: 2) == 1 ? 1 : -1]; |
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| 31 | |
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| 32 | const int i = 12; |
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| 33 | int a9[_Generic(i, int: 1, default: 2) == 1 ? 1 : -1]; |
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| 34 | |
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| 35 | // This is expected to not trigger any diagnostics because the controlling |
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| 36 | // expression is not evaluated. |
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| 37 | (void)_Generic(*(int *)0, int: 1); |
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| 38 | } |
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| 39 | |
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| 40 | int __attribute__((overloadable)) test (int); |
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| 41 | double __attribute__((overloadable)) test (double); |
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| 42 | char testc(char); |
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| 43 | |
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| 44 | void PR30201(void) { |
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| 45 | _Generic(4, char:testc, default:test)(4); |
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| 46 | } |
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| 47 | |
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