これが爆発する原因を突き止めようとしていますが、確固たる議論を思いつくことができません。
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x00000000f5904604
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 WebCore 0x00073528 WebCore::RenderView::computeLogicalHeight() + 0
1 WebCore 0x0006ba68 WebCore::RenderBlock::layoutBlock(bool, int) + 1548
2 WebCore 0x0006b15a WebCore::RenderBlock::layout() + 38
3 WebCore 0x0006afe6 WebCore::RenderView::layout() + 478
4 WebCore 0x0006599a WebCore::FrameView::layout(bool) + 1554
5 WebCore 0x00095ed8 WebCore::FrameView::updateLayoutAndStyleIfNeededRecursive() + 92
6 WebKit 0x0000af5c -[WebHTMLView(WebPrivate) viewWillDraw] + 76
7 CoreFoundation 0x00048616 -[NSArray makeObjectsPerformSelector:] + 174
8 CoreFoundation 0x00048616 -[NSArray makeObjectsPerformSelector:] + 174
9 CoreFoundation 0x00048616 -[NSArray makeObjectsPerformSelector:] + 174
10 CoreFoundation 0x00048616 -[NSArray makeObjectsPerformSelector:] + 174
11 WebCore 0x00095c30 WebCore::TileCache::prepareToDraw() + 60
12 QuartzCore 0x00003924 CA::Layer::layout_if_needed(CA::Transaction*) + 456
13 QuartzCore 0x00004858 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 12
14 QuartzCore 0x0000423e CA::Context::commit_transaction(CA::Transaction*) + 234
15 QuartzCore 0x0000404c CA::Transaction::commit() + 312
16 UIKit 0x0000c8e6 _afterCACommitHandler + 122
17 CoreFoundation 0x000976ca __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18
18 CoreFoundation 0x000959bc __CFRunLoopDoObservers + 272
19 CoreFoundation 0x00095d12 __CFRunLoopRun + 738
20 CoreFoundation 0x00008eb8 CFRunLoopRunSpecific + 352
21 CoreFoundation 0x00008d44 CFRunLoopRunInMode + 100
22 GraphicsServices 0x000052e6 GSEventRunModal + 70
23 UIKit 0x000572fc UIApplicationMain + 1116
24 MyApp 0x000c7eea -[viewController displayControllers:] (ViewController.m:45)
そしてこれが45行目。
[_scrollView setContentSize:CGSizeMake(100,44 * 3)];
_scrollView は IBOutlet です。