CIFilter with CIQRCodeGenerator cause crash - ios

Question

I'm trying to generate QR code with following code :
DispatchQueue.main.async {
let image = generateQRCode(from: qrCodeString)
}
func generateQRCode(from string: String?) -> UIImage? {
if let data = string?.data(using: .utf8, allowLossyConversion: false) {
if let filter = CIFilter(name: "CIQRCodeGenerator") {
filter.setValue(data, forKey: "inputMessage")
let transform = CGAffineTransform(scaleX: 5, y: 5)
if let output = filter.outputImage?.transformed(by: transform) {
return UIImage(ciImage: output)
}
}
}
return nil
}
This code works well for most devices/iOS version.
But firebase brings me a lot of device crashes: iPhone 11, XR. iOS 13.4.0
Crashed: com.apple.main-thread
0 CocoaDebug 0x1023a0adc perform_rebinding_with_section + 332
1 CocoaDebug 0x1023a087c rebind_symbols_for_image + 416
2 libdyld.dylib 0x1999c3f4c invocation function for block in dyld3::AllImages::runImageCallbacks(dyld3::Array<dyld3::LoadedImage> const&) + 244
3 libdyld.dylib 0x1999c3768 dyld3::AllImages::runImageCallbacks(dyld3::Array<dyld3::LoadedImage> const&) + 160
4 libdyld.dylib 0x1999c8dd8 dyld3::AllImages::loadImage(Diagnostics&, unsigned int, dyld3::closure::DlopenClosure const*, bool, bool, bool, bool) + 580
5 libdyld.dylib 0x1999c89ec dyld3::AllImages::dlopen(Diagnostics&, char const*, bool, bool, bool, bool, bool, void const*) + 868
6 libdyld.dylib 0x1999ca434 dyld3::dlopen_internal(char const*, int, void*) + 364
7 libdyld.dylib 0x1999bd6c0 dlopen + 116
8 CoreFoundation 0x199bcf5c8 _CFBundleDlfcnLoadBundle + 156
9 CoreFoundation 0x199af1eac _CFBundleLoadExecutableAndReturnError + 372
10 Foundation 0x199ec27a8 -[NSBundle loadAndReturnError:] + 316
11 CoreImage 0x19b479bcc invocation function for block in register_more_builtins(void (NSString*) block_pointer) + 804
12 libdispatch.dylib 0x19986833c _dispatch_client_callout + 20
13 libdispatch.dylib 0x199869a68 _dispatch_once_callout + 32
14 CoreImage 0x19b476318 register_more_builtins(void (NSString*) block_pointer) + 304
15 CoreImage 0x19b476b40 classNameIsSystemFilter(NSString*) + 112
16 CoreImage 0x19b476dbc +[CIFilter(CIFilterRegistryPrivate) filterWithName:setDefaults:] + 396
17 MYApp 0x100656598 QRCodeViewController.generateQRCode(from:) + 4370490776 (<compiler-generated>:4370490776)
18 MYApp 0x1006563a4 QRCodeViewController.viewDidLoad() + 28 (QRCodeViewController.swift:28)
19 MYApp 0x10065642c #objc QRCodeViewController.viewDidLoad() + 4370490412 (<compiler-generated>:4370490412)
20 UIKitCore 0x19d6a236c -[UIViewController _sendViewDidLoadWithAppearanceProxyObjectTaggingEnabled] + 104
21 UIKitCore 0x19d6a6f20 -[UIViewController loadViewIfRequired] + 952
22 UIKitCore 0x19d6a730c -[UIViewController view] + 32
23 UIKitCore 0x19d602fa4 -[UINavigationController _startCustomTransition:] + 1148
24 UIKitCore 0x19d617478 -[UINavigationController _startDeferredTransitionIfNeeded:] + 692
25 UIKitCore 0x19d618818 -[UINavigationController __viewWillLayoutSubviews] + 176
26 UIKitCore 0x19d5fb4fc -[UILayoutContainerView layoutSubviews] + 228
27 UIKitCore 0x19e1de6a0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2168
28 QuartzCore 0x1a08314a0 -[CALayer layoutSublayers] + 292
29 QuartzCore 0x1a08318e0 CA::Layer::layout_if_needed(CA::Transaction*) + 472
30 QuartzCore 0x1a0843dc4 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 144
31 QuartzCore 0x1a0788884 CA::Context::commit_transaction(CA::Transaction*, double) + 304
32 QuartzCore 0x1a07b33d0 CA::Transaction::commit() + 656
33 QuartzCore 0x1a07b3fc8 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 96
34 CoreFoundation 0x199b42c54 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
35 CoreFoundation 0x199b3d8e4 __CFRunLoopDoObservers + 420
36 CoreFoundation 0x199b3dd84 __CFRunLoopRun + 1020
37 CoreFoundation 0x199b3d660 CFRunLoopRunSpecific + 480
38 GraphicsServices 0x1a3f4e604 GSEventRunModal + 164
39 UIKitCore 0x19dd1215c UIApplicationMain + 1944
40 MYApp 0x100518e54 main + 4369190484 (<compiler-generated>:4369190484)
41 libdyld.dylib 0x1999b91ec start + 4
I tried several different encoding, I tried to do it on the main thread or in backgroud, but always without result.
it looks like the whole class CIFilter causes a crash !!

Answer 1

I figured out how to fix it. The problem was the third-party CocoaDebug ! I remove the pod and I have no more crashes! Thanks!