@steipete Peter Steinberger steipete

@steipete steipete / gist:a759b56dc1b5d94ba5b3c03ddd00a1ed
Created Feb 12, 2018
Crash from https://twitter.com/steipete/status/963080391207931904
View gist:a759b56dc1b5d94ba5b3c03ddd00a1ed
Process: Tweetbot [58303]
Path: /Applications/Tweetbot.app/Contents/MacOS/Tweetbot
Identifier: com.tapbots.TweetbotMac
Version: 2.5.4 (25400)
App Item ID: 557168941
App External ID: 824334033
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Tweetbot [58303]
User ID: 501
@steipete steipete / DispatchQueueSurprise.m
Last active Feb 6, 2018
This fails in iOS 9, but passes for iOS 10/11. What changed around serial/concurrent dispatch queues in iOS 10 so that this now works. Or rather, why does this not work in iOS 9?
View DispatchQueueSurprise.m
- (void)testDispatchConcurrentExecutionWithNamedQueuesRaw {
let expectation = [self expectationWithDescription:@"Concurrent execution must happen"];
let semaphore = dispatch_semaphore_create(0);
// global queue, concurrent
let attributes = dispatch_queue_attr_make_with_qos_class(DISPATCH_QUEUE_CONCURRENT, QOS_CLASS_DEFAULT, 0);
let defaultQueue = dispatch_queue_create("com.pspdfkit.default-concurrent", attributes);
// serial sub-queues that dispatch to concurrent queue
let queue1 = dispatch_queue_create("com.pspdfkit.queue1", DISPATCH_QUEUE_SERIAL);
@steipete steipete / gist:8c683dd840596e34dcb9159373cea933
Created Nov 8, 2017
NSObject is overloaded. This is iOS 11.2b2. Crazy. And yes, `pspdf` is guilty as well. It's so easy/convenient to make a category on it.
View gist:8c683dd840596e34dcb9159373cea933
Class Methods:
+ (Class) safeCategoryBaseClass; (0x12c470134)
+ (BOOL) _old_unswizzled_automaticallyNotifiesObserversForKey:(id)arg1; (0x1150df5a0)
+ (id) _old_unswizzled_keyPathsForValuesAffectingValueForKey:(id)arg1; (0x1150df620)
+ (id) requiredStoreLibraryPersonalizationProperties; (0x118daaeff)
+ (void) mf_clearLocks; (0x11a41d09e)
+ (void) _accessibilityCalDetailStringForEvent:(id)arg1 inLine1:(id*)arg2 inLine2:(id*)arg3 inLine3:(id*)arg4 inLine4:(id*)arg5; (0x127db7c6e)
+ (void) _accessibilityCalGetHourDesignatorsForAM:(id*)arg1 andPM:(id*)arg2; (0x127d1e7bb)
+ (BOOL) _accessibilityCalSpaceBetweenDesignatorsAndHour; (0x127d1e7cb)
+ (BOOL) _accessibilityCalHourDesignatorsAreBeforeHour; (0x127d1e7ec)
@steipete steipete / gist:2ec99bca9dd01e405f9fd7db17472cb5
Created Oct 31, 2017
Crash in com.apple.dt.async-test-expectation
View gist:2ec99bca9dd01e405f9fd7db17472cb5
Process: PSPDFFoundation-TestHost-iOS [95495]
Path: /Users/USER/Library/Developer/CoreSimulator/Devices/1694A397-7C29-4470-A3A0-9A3E350DB19E/data/Containers/Bundle/Application/3A6309AC-3045-4D7C-9E83-006339C933C6/PSPDFFoundation-TestHost-iOS.app/PSPDFFoundation-TestHost-iOS
Identifier: PSPDFFoundation-TestHost-iOS
Version: 1.0 (1)
Code Type: X86-64 (Native)
Parent Process: launchd_sim [93146]
Responsible: PSPDFFoundation-TestHost-iOS [95495]
User ID: 502
Date/Time: 2017-10-30 15:37:04.800 -0400
@steipete steipete / gist:6a467947cf0db4eb0be0cd90af1990d5
Created Oct 20, 2017
Crash when you call fulfill on background threads and are unlucky?
View gist:6a467947cf0db4eb0be0cd90af1990d5
Process: PSPDFFoundation-TestHost-iOS [15960]
Path: /Users/USER/Library/Developer/CoreSimulator/Devices/0AE503AA-1EFF-4FC4-A1B3-D64B83DD1059/data/Containers/Bundle/Application/774DC2FD-74EF-4F79-B700-EEB70410267F/PSPDFFoundation-TestHost-iOS.app/PSPDFFoundation-TestHost-iOS
Identifier: PSPDFFoundation-TestHost-iOS
Version: 1.0 (1)
Code Type: X86-64 (Native)
Parent Process: launchd_sim [10769]
Responsible: PSPDFFoundation-TestHost-iOS [15960]
User ID: 502
Date/Time: 2017-10-20 00:02:36.697 -0700
@steipete steipete / gist:84fa68a373be22ef2737c0b3441ac94e
Last active Aug 29, 2017
Xcode 9b6 (9M214v) crash on High Sierra 17A352a
View gist:84fa68a373be22ef2737c0b3441ac94e
Process: Xcode [4032]
Path: /Applications/Xcode-beta.app/Contents/MacOS/Xcode
Identifier: Xcode
Version: 9.0 (13238.4)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Xcode [4032]
User ID: 501
Date/Time: 2017-08-28 10:28:44.078 +0200
@steipete steipete / lldb
Last active Jul 13, 2017
investigating UTI issues we found for some users of https://pdfviewer.io/ in support...
View lldb
// iOS 11 (my iPad + iPhone)
(lldb) po UTTypeCopyDeclaration(kUTTypePDF)
{
UTTypeConformsTo = (
"public.data",
"public.composite-\U200bcontent"
);
UTTypeDescription = PDF;
UTTypeIdentifier = "com.adobe.pdf";
UTTypeTagSpecification = {
@steipete steipete / PSPDFDefer.m
Created May 31, 2017
Defer in ObjC. See more at https://pspdfkit.com/blog/2017/even-swiftier-objective-c
View PSPDFDefer.m
// Similar to defer in Swift
#define pspdf_defer_block_name_with_prefix(prefix, suffix) prefix ## suffix
#define pspdf_defer_block_name(suffix) pspdf_defer_block_name_with_prefix(pspdf_defer_, suffix)
#define pspdf_defer __strong void(^pspdf_defer_block_name(__LINE__))(void) __attribute__((cleanup(pspdf_defer_cleanup_block), unused)) = ^
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
static void pspdf_defer_cleanup_block(__strong void(^*block)(void)) {
(*block)();
}
#pragma clang diagnostic pop
@steipete steipete / SpringboardDestroyer.swift
Last active Jun 3, 2017
SpringboardDestroyer. Too many background tasks make Frontboard very sad. See http://openradar.appspot.com/32482871
View SpringboardDestroyer.swift
let badwork = { (queue: DispatchQueue) in
queue.async {
let app = UIApplication.shared
for index in 0..<100000 {
let name = "Yolo \(index)"
let identifier = app.beginBackgroundTask(withName: name, expirationHandler: {
print("Expired")
});
@steipete steipete / PreviewCrash.crash
Created May 30, 2017
Preview crash when parsing a specific PDF. (macOS 10.12.5)
View PreviewCrash.crash
Process: Preview [25413]
Path: /Applications/Preview.app/Contents/MacOS/Preview
Identifier: com.apple.Preview
Version: 9.0 (909.18)
Build Info: Preview-909018000000000~1
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Preview [25413]
User ID: 501