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50 lines
789 B
50 lines
789 B
7 years ago
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/*
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* Copyright (c) 2017 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <Foundation/NSObject.h>
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@interface A : NSObject
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@end
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typedef void (^MyBlock)();
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@interface C : NSObject
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+ (void)use_block:(MyBlock)block;
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@end
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@implementation A
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+ (int)ok1 {
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__block int a;
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[C use_block:^() {
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a = 10;
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}];
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return a;
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};
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+ (int)bad1 {
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int a;
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[C use_block:^() {
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int x = 0;
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}];
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return a;
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};
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+ (instancetype)ok2 {
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static id sharedInstance;
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^{
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sharedInstance = [[self alloc] init];
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}();
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return sharedInstance;
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}
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@end
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