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