iOS应用程序仅在未调试时崩溃

Question

我正在使用testflight来测试我的应用程序,并且我发生了崩溃,只有当应用程序是为ad-hoc构建并通过测试飞行分发时才会发生.相关的崩溃报告详细信息如下:

Date/Time:       2012-06-11 09:00:34.638 +0800
OS Version:      iPhone OS 5.1.1 (9B206)
Report Version:  104

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000009
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x34e74f78 objc_msgSend + 16
1   appName                         0x0002963e __24-[XYPieChart reloadData]_block_invoke_0168 (XYPieChart.m:321)
2   libdispatch.dylib               0x30295c52 _dispatch_call_block_and_release + 6
3   libdispatch.dylib               0x302a0e8a _dispatch_main_queue_callback_4CF$VARIANT$up + 190
4   CoreFoundation                  0x371482a6 __CFRunLoopRun + 1262
5   CoreFoundation                  0x370cb49e CFRunLoopRunSpecific + 294
6   CoreFoundation                  0x370cb366 CFRunLoopRunInMode + 98
7   GraphicsServices                0x3388a432 GSEventRunModal + 130
8   UIKit                           0x30e77cce UIApplicationMain + 1074
9   appName                         0x00003b20 main (main.m:14)
10  appName                         0x00003ad8 0x1000 + 10968

和引用的代码 - (XYPieChart.m:321)

    [CATransaction begin];
    [CATransaction setAnimationDuration:_animationSpeed];

    [_pieView setUserInteractionEnabled:NO];

    __block NSMutableArray *layersToRemove = nil;
    [CATransaction setCompletionBlock:^{

        if (layersToRemove) {
            [layersToRemove enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                if (obj)
                    [obj removeFromSuperlayer];
            }];

            [layersToRemove removeAllObjects];
        }

        for(SliceLayer *layer in _pieView.layer.sublayers)
        {
            [layer setZPosition:kDefaultSliceZOrder];
        }

        [_pieView setUserInteractionEnabled:YES];
    }];

    BOOL isOnStart = ([slicelayers count] == 0 && sliceCount);
    NSInteger diff = sliceCount - [slicelayers count];
    layersToRemove = [NSMutableArray arrayWithArray:slicelayers];

    BOOL isOnEnd = ([slicelayers count] && (sliceCount == 0 || sum <= 0));
    if(isOnEnd)
    {
        for(SliceLayer *layer in _pieView.layer.sublayers){
            [self updateLabelForLayer:layer value:0];
            [layer createArcAnimationForKey:@"startAngle"
                                  fromValue:[NSNumber numberWithDouble:_startPieAngle]
                                    toValue:[NSNumber numberWithDouble:_startPieAngle] 
                                   Delegate:self];
            [layer createArcAnimationForKey:@"endAngle" 
                                  fromValue:[NSNumber numberWithDouble:_startPieAngle]
                                    toValue:[NSNumber numberWithDouble:_startPieAngle] 
                                   Delegate:self];
        }
        [CATransaction commit];
        return;
    }

如果我可以在调试时重现它,我将能够找到问题,但它似乎只在为ad-hoc构建时发生.谢谢!

编辑:使用模拟器,我已将问题跟踪到此行的EXC_BAD_ACCESS

[layersToRemove enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {

Answer 1

我有类似的问题,并尝试更改项目构建设置,但它不适合我.最终通过更改发布的编译器优化级别设置解决了我的问题:

在Build Settings中,转到LLVM编译器4.2 - 代码生成部分,查找优化级别选项并将Release设置从Fastest,Smallest [-Os]更改为None [-O0].

希望这可以帮助!

Answer 2

更改您的Xcode Scheme,以便您可以测试和调试Release版本,该版本使用与Ad Hoc构建相同的编译器优化.调试Debug构建不会.

Answer 3

我最终解决了这个问题.在我的编译器设置中,不知何故,ARC没有为Ad-Hoc构建启用,导致奇怪的行为.在我解决之前,分配__block变量是有效的,因为在非ARC环境中,__block变量不会自动保留.

更改了编译器设置,以便所有构建都使用ARC并且所有内容都已修复.