1// RUN: %clang_cc1 -fsyntax-only -verify %s -fblocks
2
3int (*FP)();
4int (^IFP) ();
5int (^II) (int);
6int main() {
7  int (*FPL) (int) = FP; // C doesn't consider this an error.
8
9  // For Blocks, the ASTContext::typesAreBlockCompatible() makes sure this is an error.
10  int (^PFR) (int) = IFP; // OK
11  PFR = II;       // OK
12
13  int (^IFP) () = PFR; // OK
14
15
16  const int (^CIC) () = IFP; // OK -  initializing 'const int (^)()' with an expression of type 'int (^)()'}}
17
18  const int (^CICC) () = CIC;
19
20
21  int * const (^IPCC) () = 0;
22
23  int * const (^IPCC1) () = IPCC;
24
25  int * (^IPCC2) () = IPCC;       // expected-error {{incompatible block pointer types initializing 'int *(^)()' with an expression of type 'int *const (^)()'}}
26
27  int (^IPCC3) (const int) = PFR;
28
29  int (^IPCC4) (int, char (^CArg) (double));
30
31  int (^IPCC5) (int, char (^CArg) (double)) = IPCC4;
32
33  int (^IPCC6) (int, char (^CArg) (float))  = IPCC4; // expected-error {{incompatible block pointer types initializing 'int (^)(int, char (^)(float))' with an expression of type 'int (^)(int, char (^)(double))'}}
34
35  IPCC2 = 0;
36  IPCC2 = 1; // expected-error {{invalid block pointer conversion assigning to 'int *(^)()' from 'int'}}
37  int (^x)() = 0;
38  int (^y)() = 3;   // expected-error {{invalid block pointer conversion initializing 'int (^)()' with an expression of type 'int'}}
39  int a = 1;
40  int (^z)() = a+4;   // expected-error {{invalid block pointer conversion initializing 'int (^)()' with an expression of type 'int'}}
41}
42
43int blah() {
44  int (^IFP) (float);
45  char (^PCP)(double, double, char);
46
47  IFP(1.0);
48  IFP (1.0, 2.0); // expected-error {{too many arguments to block call}}
49
50  char ch = PCP(1.0, 2.0, 'a');
51  return PCP(1.0, 2.0);   // expected-error {{too few arguments to block}}
52}
53