51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
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// RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s -fblocks
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int (*FP)();
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int (^IFP) ();
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int (^II) (int);
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int main() {
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int (*FPL) (int) = FP; // expected-error {{cannot initialize a variable of type 'int (*)(int)' with an lvalue of type 'int (*)()'}}
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// For Blocks, the ASTContext::typesAreBlockCompatible() makes sure this is an error.
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int (^PFR) (int) = IFP; // expected-error {{cannot initialize a variable of type 'int (^)(int)' with an lvalue of type 'int (^)()'}}
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PFR = II; // OK
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const int (^CIC) () = IFP; // OK - initializing 'const int (^)()' with an expression of type 'int (^)()'}}
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const int (^CICC) () = CIC;
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int * const (^IPCC) () = 0;
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int * const (^IPCC1) () = IPCC;
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int * (^IPCC2) () = IPCC; // expected-error {{cannot initialize a variable of type 'int *(^)()' with an lvalue of type 'int *const (^)()'}}
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int (^IPCC3) (const int) = PFR;
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int (^IPCC4) (int, char (^CArg) (double));
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int (^IPCC5) (int, char (^CArg) (double)) = IPCC4;
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int (^IPCC6) (int, char (^CArg) (float)) = IPCC4; // expected-error {{cannot initialize a variable of type 'int (^)(int, char (^)(float))' with an lvalue of type}}
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IPCC2 = 0; // OK - assign a nullptr to a pointer.
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IPCC2 = 1; // expected-error {{invalid block pointer conversion assigning to 'int *(^)()' from 'int'}}
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int (^x)() = 0;
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int (^y)() = 3; // expected-error {{cannot initialize a variable of type 'int (^)()' with an rvalue of type 'int'}}
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int a = 1;
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int (^z)() = a+4; // expected-error {{cannot initialize a variable of type 'int (^)()' with an rvalue of type 'int'}}
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}
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int blah() {
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int (^IFP) (float);
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char (^PCP)(double, double, char);
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IFP(1.0);
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IFP (1.0, 2.0); // expected-error {{too many arguments to block call}}
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char ch = PCP(1.0, 2.0, 'a');
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return PCP(1.0, 2.0); // expected-error {{too few arguments to block}}
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}
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