1f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne// RUN: %clang_cc1 -std=c1x -fsyntax-only -verify %s 2f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarvoid g(void); 487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 5f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbournevoid foo(int n) { 6f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne (void) _Generic(0, 7f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne struct A: 0, // expected-error {{type 'struct A' in generic association incomplete}} 8f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne void(): 0, // expected-error {{type 'void ()' in generic association not an object type}} 9f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int[n]: 0); // expected-error {{type 'int [n]' in generic association is a variably modified type}} 10f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 11f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne (void) _Generic(0, 12f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne void (*)(): 0, // expected-note {{compatible type 'void (*)()' specified here}} 13f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne void (*)(void): 0); // expected-error {{type 'void (*)(void)' in generic association compatible with previously specified type 'void (*)()'}} 14f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 15f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne (void) _Generic((void (*)()) 0, // expected-error {{controlling expression type 'void (*)()' compatible with 2 generic association types}} 16f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne void (*)(int): 0, // expected-note {{compatible type 'void (*)(int)' specified here}} 17f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne void (*)(void): 0); // expected-note {{compatible type 'void (*)(void)' specified here}} 18f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 19f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne (void) _Generic(0, // expected-error {{controlling expression type 'int' not compatible with any generic association type}} 20f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne char: 0, short: 0, long: 0); 21f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne 22f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a1[_Generic(0, int: 1, short: 2, float: 3, default: 4) == 1 ? 1 : -1]; 23f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a2[_Generic(0, default: 1, short: 2, float: 3, int: 4) == 4 ? 1 : -1]; 24f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a3[_Generic(0L, int: 1, short: 2, float: 3, default: 4) == 4 ? 1 : -1]; 25f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a4[_Generic(0L, default: 1, short: 2, float: 3, int: 4) == 1 ? 1 : -1]; 26f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a5[_Generic(0, int: 1, short: 2, float: 3) == 1 ? 1 : -1]; 27f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne int a6[_Generic(0, short: 1, float: 2, int: 3) == 3 ? 1 : -1]; 2887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 2987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar int a7[_Generic("test", char *: 1, default: 2) == 1 ? 1 : -1]; 3087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar int a8[_Generic(g, void (*)(void): 1, default: 2) == 1 ? 1 : -1]; 3187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 3287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const int i = 12; 3387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar int a9[_Generic(i, int: 1, default: 2) == 1 ? 1 : -1]; 344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // This is expected to not trigger any diagnostics because the controlling 364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // expression is not evaluated. 374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar (void)_Generic(*(int *)0, int: 1); 38f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne} 39