Home | History | Annotate | Download | only in SemaCXX
      1 // RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s -fblocks
      2 
      3 int (*FP)();
      4 int (^IFP) ();
      5 int (^II) (int);
      6 int main() {
      7   int (*FPL) (int) = FP; // expected-error {{cannot initialize a variable of type 'int (*)(int)' with an lvalue of type 'int (*)()'}}
      8 
      9   // For Blocks, the ASTContext::typesAreBlockCompatible() makes sure this is an error.
     10   int (^PFR) (int) = IFP; // expected-error {{cannot initialize a variable of type 'int (^)(int)' with an lvalue of type 'int (^)()'}}
     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  {{cannot initialize a variable of type 'int *(^)()' with an lvalue 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 {{cannot initialize a variable of type 'int (^)(int, char (^)(float))' with an lvalue of type}}
     34 
     35   IPCC2 = 0;
     36   IPCC2 = 1;
     37   int (^x)() = 0;
     38   int (^y)() = 3;   // expected-error {{cannot initialize a variable of type 'int (^)()' with an rvalue of type 'int'}}
     39   int a = 1;
     40   int (^z)() = a+4;   // expected-error {{cannot initialize a variable of type 'int (^)()' with an rvalue of type 'int'}}
     41 }
     42 
     43 int 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