llvm-project/clang/test/SemaObjCXX/cstyle-block-pointer-cast.mm

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// RUN: %clang_cc1 -fsyntax-only -verify -fblocks -Wno-objc-root-class %s
// radar 7562285
typedef int (^blocktype)(int a, int b);
@interface A {
A* a;
id b;
Class c;
}
- (blocktype)Meth;
@end
@implementation A
- (blocktype)Meth {
if (b)
return (blocktype)b;
else if (a)
return (blocktype)a; // expected-error {{C-style cast from 'A *' to 'blocktype' (aka 'int (^)(int, int)') is not allowed}}
else
return (blocktype)c;
}
@end
@interface B {
blocktype a;
blocktype b;
blocktype c;
}
- (id)Meth;
@end
@implementation B
- (id)Meth {
if (a)
return (A*)a; // expected-error {{C-style cast from 'blocktype' (aka 'int (^)(int, int)') to 'A *' is not allowed}}
if (b)
return (id)b;
if (c)
return (Class)b;
}
@end