infer_clone/infer/tests/codetoanalyze/objc/frontend/block/retain_cycle.m

/*
 * Copyright (c) 2015 - present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#import <Foundation/NSObject.h>

@interface D : NSObject

@end


typedef void (^MyHandler)(D* data);


@interface B : NSObject

- (void)sHandler: (MyHandler) h;
@end

@implementation B {
    D* _d;
    MyHandler _h;
}

- (void)sHandler:(MyHandler)h {

    self->_h=h;
}

@end


@interface A : NSObject

- (void)capture;
@end

@implementation A {
    B* _b;
    D* _data;
}

- (void)capture
{
    _b=[B alloc];
    [_b sHandler:^(D *d){
        _data=d;
    }];
}

@end

A* foo(A* a) {

    [a capture];

    return a;
};


int main(int argc, const char * argv[]) {

    A* a = [A alloc];

    a=foo(a);

    return 0;
}