1// RUN: %clang_cc1 -std=c1x -fsyntax-only -verify %s
2
3void g(void);
4
5void foo(int n) {
6  (void) _Generic(0,
7      struct A: 0, // expected-error {{type 'struct A' in generic association incomplete}}
8      void(): 0,   // expected-error {{type 'void ()' in generic association not an object type}}
9      int[n]: 0);  // expected-error {{type 'int [n]' in generic association is a variably modified type}}
10
11  (void) _Generic(0,
12      void (*)():     0,  // expected-note {{compatible type 'void (*)()' specified here}}
13      void (*)(void): 0); // expected-error {{type 'void (*)(void)' in generic association compatible with previously specified type 'void (*)()'}}
14
15  (void) _Generic((void (*)()) 0, // expected-error {{controlling expression type 'void (*)()' compatible with 2 generic association types}}
16      void (*)(int):  0,  // expected-note {{compatible type 'void (*)(int)' specified here}}
17      void (*)(void): 0); // expected-note {{compatible type 'void (*)(void)' specified here}}
18
19  (void) _Generic(0, // expected-error {{controlling expression type 'int' not compatible with any generic association type}}
20      char: 0, short: 0, long: 0);
21
22  int a1[_Generic(0, int: 1, short: 2, float: 3, default: 4) == 1 ? 1 : -1];
23  int a2[_Generic(0, default: 1, short: 2, float: 3, int: 4) == 4 ? 1 : -1];
24  int a3[_Generic(0L, int: 1, short: 2, float: 3, default: 4) == 4 ? 1 : -1];
25  int a4[_Generic(0L, default: 1, short: 2, float: 3, int: 4) == 1 ? 1 : -1];
26  int a5[_Generic(0, int: 1, short: 2, float: 3) == 1 ? 1 : -1];
27  int a6[_Generic(0, short: 1, float: 2, int: 3) == 3 ? 1 : -1];
28
29  int a7[_Generic("test", char *: 1, default: 2) == 1 ? 1 : -1];
30  int a8[_Generic(g, void (*)(void): 1, default: 2) == 1 ? 1 : -1];
31
32  const int i = 12;
33  int a9[_Generic(i, int: 1, default: 2) == 1 ? 1 : -1];
34
35  // This is expected to not trigger any diagnostics because the controlling
36  // expression is not evaluated.
37  (void)_Generic(*(int *)0, int: 1);
38}
39