| 1 | // RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks |
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| 2 | // rdar://10734265 |
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| 3 | |
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| 4 | @class NSObject; |
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| 5 | typedef void (^block1_t)(int arg); |
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| 6 | typedef void (^block2_t)(block1_t arg); |
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| 7 | typedef void (^block3_t)(NSObject *arg); |
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| 8 | typedef void (^block4_t)(id arg); |
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| 9 | |
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| 10 | void fn(block4_t arg); // expected-note {{passing argument to parameter 'arg' here}} |
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| 11 | |
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| 12 | void another_fn(block2_t arg); |
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| 13 | |
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| 14 | int main() { |
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| 15 | block1_t b1; |
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| 16 | block2_t b2; |
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| 17 | block3_t b3; |
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| 18 | block3_t b4; |
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| 19 | block4_t b5; |
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| 20 | |
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| 21 | 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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| 22 | fn(b2); // must succeed: block1_t *is* compatible with id |
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| 23 | fn(b3); // succeeds: NSObject* compatible with id |
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| 24 | fn(b4); // succeeds: id compatible with id |
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| 25 | |
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| 26 | another_fn(b5); |
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| 27 | } |
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| 28 | |
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