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50 lines
964 B
50 lines
964 B
9 years ago
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/*
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* Copyright (c) 2016 - 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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#include <dispatch/dispatch.h>
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@interface A : NSObject
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- (int) foo: (int &) y;
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@end
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@implementation A
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- (int) foo: (int &) y
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{
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dispatch_async(dispatch_get_main_queue(), ^{
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int a = y; // Error
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return ;
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});
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return 1;
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}
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- (int) foo2: (int &) y
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{
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const int copied_y = y;
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dispatch_async(dispatch_get_main_queue(), ^{
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int a = copied_y; // OK
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return ;
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});
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return 1;
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}
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- (int) foo3: (int &) y param2: (int &) z
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{
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dispatch_async(dispatch_get_main_queue(), ^{
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int a = y; // Error
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int b = z; // Error
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return ;
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});
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return 1;
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}
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@end
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