27 lines
809 B
Objective-C
27 lines
809 B
Objective-C
// RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks
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// rdar://10734265
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@class NSObject;
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typedef void (^block1_t)(int arg);
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typedef void (^block2_t)(block1_t arg);
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typedef void (^block3_t)(NSObject *arg);
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typedef void (^block4_t)(id arg);
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void fn(block4_t arg); // expected-note {{passing argument to parameter 'arg' here}}
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void another_fn(block2_t arg);
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int main() {
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block1_t b1;
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block2_t b2;
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block3_t b3;
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block3_t b4;
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block4_t b5;
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fn(b1); // expected-error {{incompatible block pointer types passing 'block1_t' (aka 'void (^)(int)') to parameter of type 'block4_t' (aka 'void (^)(id)')}}
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fn(b2); // must succeed: block1_t *is* compatible with id
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fn(b3); // succeeds: NSObject* compatible with id
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fn(b4); // succeeds: id compatible with id
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another_fn(b5);
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}
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