When I try to make a unit test target for my macOS app that uses Objective-C, running tests fails, and the debugging log shows a message "Creating more than one Application". If, on the other hand, when I create the unit test target, I select "None" as the target to be tested, and then add all my sources to that target, my tests work. So, I can get my testing done, but I think I must be doing something wrong. By the way, along with the error message, there is a stack crawl: 0 CoreFoundation 0x00007ff8140410aa __exceptionPreprocess + 242 1 libobjc.A.dylib 0x00007ff813b660b7 objc_exception_throw + 48 2 Foundation 0x00007ff814f19bd8 -[NSCalendarDate initWithCoder:] + 0 3 AppKit 0x00007ff817030062 -[NSApplication init] + 1718 4 XCTestCore 0x000000010774b0df -[XCTestDriver _createTestBundlePrincipalClassInstance] + 82 5 XCTestCore 0x0000000107749338 -[XCTestDriver _runTests] + 111 6 XCTestCore 0x000000010770f194 _XCTestMain + 126 7 libXCTestBundleInject.dylib 0x0000000106e8982d __copy_helper_block_e8_32s + 0 8 CoreFoundation 0x00007ff813fc9a91 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12 9 CoreFoundation 0x00007ff813fc99ca __CFRunLoopDoBlocks + 398 10 CoreFoundation 0x00007ff813fc883d __CFRunLoopRun + 898 11 CoreFoundation 0x00007ff813fc7e51 CFRunLoopRunSpecific + 560 12 HIToolbox 0x00007ff81da52f3d RunCurrentEventLoopInMode + 292 13 HIToolbox 0x00007ff81da52b84 ReceiveNextEventCommon + 199 14 HIToolbox 0x00007ff81da52aa8 _BlockUntilNextEventMatchingListInModeWithFilter + 64 15 AppKit 0x00007ff8170689d8 _DPSNextEvent + 858 16 AppKit 0x00007ff817067882 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1214 17 AppKit 0x00007ff817059ef7 -[NSApplication run] + 586 18 AppKit 0x00007ff81702e111 NSApplicationMain + 817 19 PlainCalc 0x00000001057d0a91 main + 65 20 dyld 0x00007ff813b93418 start + 1896

I have a document-based macOS app written in Objective-C, and each document window contains a scrollable NSTextView. I know that printing can get complicated if you want to do nice pagination, but is there a quick and dirty way to get basic printing working? As it is, the print panel shows up, but its preview area is totally blank. Here's the current printing part of my NSDocument subclass. - (NSPrintInfo *)printInfo { NSPrintInfo *printInfo = [super printInfo]; [printInfo setHorizontalPagination: NSPrintingPaginationModeFit]; [printInfo setHorizontallyCentered: NO]; [printInfo setVerticallyCentered: NO]; [printInfo setLeftMargin: 72.0]; [printInfo setRightMargin: 72.0]; [printInfo setTopMargin: 72.0]; [printInfo setBottomMargin: 72.0]; return printInfo; } - (void)printDocumentWithSettings:(NSDictionary<NSPrintInfoAttributeKey, id> *)printSettings showPrintPanel:(BOOL)showPrintPanel delegate:(id)delegate didPrintSelector:(SEL)didPrintSelector contextInfo:(void *)contextInfo { NSPrintInfo* thePrintInfo = [self printInfo]; [thePrintInfo setVerticallyCentered: NO ]; NSPrintOperation *op = [NSPrintOperation printOperationWithView: _textView printInfo: thePrintInfo ]; [op runOperationModalForWindow: _docWindow delegate: delegate didRunSelector: didPrintSelector contextInfo: contextInfo]; }

When I pass a file path url of a file in iCloud Drive to -[NSWorkspace openURLs:withApplicationAtURL:configuration:completionHandler:], it fails. There is no exception, and the completion handler isn't called. This is in a sandboxed app on macOS 26.1. NSWorkspaceOpenConfiguration* config = NSWorkspaceOpenConfiguration.configuration; config.activates = YES; config.promptsUserIfNeeded = YES; NSLog(@"performDrag 2 with %@", filePathObs); [NSWorkspace.sharedWorkspace openURLs: filePathObs withApplicationAtURL: appURL configuration: config completionHandler: ^(NSRunningApplication * _Nullable app, NSError * _Nullable error) { NSLog(@"performDrag 3"); if (error != nil) { NSLog(@"%@\n%@", error, filePathObs); } NSLog(@"complete performDrag"); }]; NSLog(@"performDrag 4"); In the debug log, the performDrag 2 and performDrag 4 messages appear. I also looked in the Console log, but the only messages that mention my app don't mean anything to me. AFIsDeviceGreymatterEligible Missing entitlements for os_eligibility lookup 6c Reentrant message: kDragIPCCompleted, current message: kDragIPCLeaveApplication

Running Tahoe 26.1 in a virtual machine, I can't sign into my Apple account. There is an error message saying "Could not communicate with the server." Internet access otherwise seems to be working in the VM. I tried both UTM and VirtualBuddy. Is this supposed to work?

As I understand it, when you define a custom build rule with a script, Xcode will pass each matching input file to your script though variables like INPUT_FILE_PATH. So you normally don't need to explicitly list input files. However, there is an "input files" section in the build rule definition. How is that used? I'm hoping that it only used for dependencies and deciding whether a rule needs to be run. For example, suppose my rule is compiling a source file. Normally I just want to re-run the compile if the source file changes, but if the compiler itself changes, I probably also want to recompile. Can I list the compiler as an input file?

Will TestFlight for Mac be available for apps sold outside App Store?

I have an app that uses NSURLDownload to download some files. I get an SSL error when running on Sierra (macOS 10.12), but it works fine on El Capitan (10.11) and High Sierra (10.13) and later. Safari has no problem downloading the same file on Sierra. Logging the NSError from the download:didFailWithError: delegate method shows: Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x7f9620045950>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9802, NSErrorPeerCertificateChainKey=(     "<cert(0x7f961f14ce00) s: files.frameforge.com i: R3>",     "<cert(0x7f961f12bc00) s: R3 i: ISRG Root X1>",     "<cert(0x7f961f12c400) s: ISRG Root X1 i: DST Root CA X3>" ), NSUnderlyingError=0x7f961e4af1a0 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSErrorFailingURLStringKey=https://files.frameforge.com/webgrab/mac/ff4.0-mac-update-list.xml.wgz, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFNetworkCFStreamSSLErrorOriginalValue=-9802, kCFStreamPropertySSLPeerCertificates=(     "<cert(0x7f961f14ce00) s: files.frameforge.com i: R3>",     "<cert(0x7f961f12bc00) s: R3 i: ISRG Root X1>",     "<cert(0x7f961f12c400) s: ISRG Root X1 i: DST Root CA X3>" ), _kCFStreamPropertySSLClientCertificateState=0, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x7f9620045950>, NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., _kCFStreamErrorDomainKey=3, NSErrorFailingURLKey=https://files.frameforge.com/webgrab/mac/ff4.0-mac-update-list.xml.wgz, _kCFStreamErrorCodeKey=-9802}}, NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://files.frameforge.com/webgrab/mac/ff4.0-mac-update-list.xml.wgz, NSErrorFailingURLStringKey=https://files.frameforge.com/webgrab/mac/ff4.0-mac-update-list.xml.wgz, NSErrorClientCertificateStateKey=0} Any idea how I could fix this? Regarding the recovery suggestion "Would you like to connect to the server anyway?", how would I do that, use an http URL?

When I tried reading the orderedIndex property of an NSWindow, either in my own code or in lldb, I got 9223372036854775807, which happens to be the largest signed 64-bit integer. I can live without it, but just wondering if anyone else noticed this.

Since updating to macOS 11.5.2, I'm getting almost constant crashes in EmojiFunctionRowIM_Extension, whatever that is. I'm not using any emoji. Anyone else? Can anything be done?

What does it means when -[MTLDevice newRenderPipelineStateWithDescriptor:options:reflection:error:] returns the error "No primitive topology specified for layer selection program generation"? We've seen this after Ogre has compiled a vertex shader that uses [[viewport_array_index]] on a Mac with Nvidia graphics.

I have a project with several targets, which use different header paths and have some C++ code conditionalized by preprocessor symbols with #if. The targets build without error, but "live issues" produces errors, because apparently it's using the wrong headers but the right preprocessor symbols. I've tried nuking the derived data. Any other suggestions? I'm using Xcode 13.2.

The functions CFURLGetFSRef and CFURLCreateFromFSRef have deprecation warnings that say "not supported". That confuses me, because when I see "deprecated" I think "it may stop working at some point in the future", and when I see "not supported" I think "it doesn't work now". Which is it?

In the documentation of -[NSBitmapImageRep initWithBitmapDataPlanes:pixelsWide:pixelsHigh:bitsPerSample:samplesPerPixel:hasAlpha:isPlanar:colorSpaceName:bitmapFormat:bytesPerRow:bitsPerPixel:], it says that the bitmap format mask can include NSBitmapFormatFloatingPointSamples, which suggests that the answer is yes, but it also says that the number of bits per component can be at most 16, which suggests that the answer is no.

I have some NSViews that come and go during printing, and I want them to dealloc soon rather than waiting until the whole printing process is finished. The problem is that inside -[NSView addSubview:], the subview gets retained several times, and one of those schedules a release using CFRunLoopPerformBlock. But I don't have a run loop running, so that's not happening. The documentation of CFRunLoopPerformBlock says If you want the work performed right away, you must explicitly wake up that thread using the CFRunLoopWakeUp function. But calling CFRunLoopWakeUp( CFRunLoopGetMain() ) does not help, probably because the run loop is not running. If I call -[NSApplication nextEventMatchingMask: ...] in one of the standard modes, then the block from CFRunLoopPerformBlock runs, but too much other stuff also runs, such as queued notifications.

I can't find any documentation on CGRequestPostEventAccess or its friend CGRequestListenEventAccess, except for the API declarations in CGEvent.h. The fact that it returns a boolean and doesn't have a completion callback or anything like that suggests that it should be synchronous, i.e., not return until the user has decided to grant or deny permission. Experimentally, that doesn't seem to be the case, but then what does the return value mean?