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Background Assets Directory Collision
Hello, I'm trying to use multiple Background Assets Packs to host map tiles. This is problematic for a few reasons. MKTileOverlay requires a method that returns a URL. AssetPackManager.shared.url() throws, but it's unrelated to the url. It will return a URL even if it points to nothing. There's no name-spacing. Everything appears to be flattened. (See Error below) Simultaneously, this also is not the case as the documentation states: if there’s a path collision across multiple asset packs, then it’s undefined from which asset pack an individual file will be resolved. AssetPackManager.shared.url() doesn't have an optional parameter to explicitly declare the asset pack you want to access, like AssetPackManager.shared.contents(at: FilePath) does For example, I have multiple different tiles I'm trying to overlay for z: 10, x: 239, and y: 414. Foo/10/239/414.png Bar/10/239/414.png And even when explicitly stating the fold directory, it appears that the assets are flattened down. As I'm receiving this error. The URL for “Foo/10/239/414.png” couldn’t be retrieved: “414.png” couldn’t be copied to “239” because an item with the same name already exists.
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242
Oct ’25
NSUserDefaults + iPhone Transfer Issues
Hi! I was wondering if anyone else encountered similar issues and what the solution ended up being. We're encountering weird sign-in issues on our iOS version of our app. It seems like an uninstall and reinstall solves it, but the issue seems to only impact users who underwent the transfer process from one iOS device to another. What I am curious about: What is copied over from one device to another in this process? Is there a way outside of owning multiple test devices to replicate this flow? Our current suspicion is that NSUserDefaults is not being cleared by our app on first start, and that stale data is copied over during this transfer process, breaking the sign-in until a re-install wipes everything properly. Does it seem like we're on the right track with this assumption, or completely out to lunch?
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88
Apr ’25
The Unity application crashes due to KERN_PROTECTION_FAILURE and GC_clear_stack_inneb why?
Crash dump: `Crashed Thread: 0 tid_103 Dispatch queue: com.apple.main-thread Exception Type: EXC_BAD_ACCESS (SIGILL) Exception Codes: KERN_PROTECTION_FAILURE at 0x000000016d3bfea0 Exception Codes: 0x0000000000000002, 0x000000016d3bfea0 Termination Reason: Namespace SIGNAL, Code 4 Illegal instruction: 4 Terminating Process: Unity [7873] VM Region Info: 0x16d3bfea0 is in 0x169bbc000-0x16d3c0000; bytes after start: 58736288 bytes before end: 351 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL mapped file 169b00000-169ba8000 [ 672K] rw-/rwx SM=PRV Object_id=4d22156e GAP OF 0x14000 BYTES ---> STACK GUARD 169bbc000-16d3c0000 [ 56.0M] ---/rwx SM=NUL stack guard for thread 0 Stack 16d3c0000-16dbbc000 [ 8176K] rw-/rwx SM=SHM thread 0 Thread 0 Crashed:: tid_103 Dispatch queue: com.apple.main-thread 0 libsystem_platform.dylib 0x1932ee7ac _platform_memset + 108 1 libmonobdwgc-2.0.dylib 0x33977abdc GC_clear_stack_inner + 60 2 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 3 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 4 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 5 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 6 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 7 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 8 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 9 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 10 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 11 libmonobdwgc-2.0.dylib 0x33977abf8 GC_clear_stack_inner + 88 12 libmonobdwgc-2.0.dylib 0x33976b518 GC_clear_stack + 76 13 libmonobdwgc-2.0.dylib 0x33973c074 mono_gc_alloc_obj + 112 14 libmonobdwgc-2.0.dylib 0x3396e0db4 mono_object_new_specific_checked + 72 15 libmonobdwgc-2.0.dylib 0x3396e116c ves_icall_object_new_specific + 28`
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425
Feb ’25
A few questions about allowed-os-versions and os-version in Distribution Definition files
In the archived documentation for Distribution Definition files (https://developer.apple.com/library/archive/documentation/DeveloperTools/Reference/DistributionDefinitionRef/Chapters/Distribution_XML_Ref.html), the allowed-os-versions and os-version element are partially documented. I have a few questions about these elements: allowed-os-versions The documentation states: Availability: Available in OS X v10.6.6 and later. Has this element always worked correctly in the past? I'm asking because it does not seem to work correctly on OS X v10.14 for the min attribute of a sub os-version element. os-version The documentation states: This element is designed for you to use a specific OS version number for the min attribute, and a major OS version number for the before attribute. The expectation is that you will know an exact minimum version but not an exact major version. This keeps you from having to guess the last minor revision before the next major revision, as you would have to do if the before attribute were inclusive. This is quite confusing because the documentation never explicitly says what a specific or major OS version number is. Is specific major.minor.patch or major.minor? What is major? major or major.minor? As the documentation was created at a time where the OS version scheme was: 10.minor.patch (and minor was actually the major) and we are now in an era where the OS version is major.minor.path, this is even more confusing. I would also be curious to know what the major version is officially supposed to be for macOS Tahoe in this case. 16 or 26? Generally speaking, this documentation is missing examples for a lot of the elements. Also why is there a tag for InstallerJS and not one for Installation in the Developer Forums?
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143
Sep ’25
Unable to download the latest EnableBluetoothCentralMatterClientDeveloperMode.mobileconfig certificate."
Hi Team, I’ve tried downloading the EnableBluetoothCentralMatterClientDeveloperMode.mobileconfig certificate from multiple sources, but all the links I found point to expired versions. Could you please help me with the URL to the latest version of this certificate? Here are the links I’ve already tried, but none of them worked: https://project-chip.github.io/connectedhomeip-doc/guides/darwin.html#profile-installation https://github.com/project-chip/connectedhomeip/blob/master/docs/guides/darwin.md Apple Site Looking forward to your support. Thanks, Mantosh Kumar
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198
Sep ’25
dlopen problems with debug build, macOS SDK 15, and ASAN
Hello, There seems to be a regression with macOS SDK 15 and dynamically loading libraries if Address Sanitizer is turned on. Seems to only affect Debug builds, and .frameworks. I've also reported this via the Feedback Assistant: FB16513866 Here's a minimal repro, if anyone is interested: https://gist.github.com/peter-esik/6b00432e411be85333e14ae7d953966e I thought I'd post this here, as according to my web searches, this isn't a very well-known bug at this point.
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326
Feb ’25
Automatic Provisioning fails in VisualStudio 2022
Hi there, I am trying to create my first iOS app using Visual Studio (Win 11) and .NET MAUI. I created a developer account and if I want to start the debugger with my local device, VS forces me to Configure Automatic Provisioning. I can select my configured account but the operation fails (see screenshot). I have no idea what is going wrong and I cannot find any setting in the developer account to fix this problem. Can anyone help me out, what is wrong and how to fix, thx!
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89
Sep ’25
Unlocking hidden "Developer mode" option on Ipad (without Mac or Xcode)
Hello, I have an iphone but not an ipad Actually a relative has an iPad. The problem I encoutered was when i was testing an app that I had built prior (so I had the ipa file) but no acces to Xcode. The thing is when I wanted to test it on my iphone, everything WENT SMOOTH and ok. When I tried on iPAD, I encounteed the problem I could not unlock the hidden "developer mode" option in any way, I tried so many things, checked and rechecked, the option was and stayed hidden, I could not activate it. Therefore I could not test the app. In the apple store I was required to give a screenshot for iPAD but that failed. because I could not produce ANY, since I could not run my app on iPAD. I actually have no idea how I activated the ability to turn on the developer mode on my iphone, it was just there and I activated it perhaps because I had added the email of my iphone to the developer account somehow? somehwere? But for iPAD I just could not find a way to do it, don't know if adding it somewhere could trigger something on the ipad to allow it to show the developer mode option so I can activate it finally? Anyway, I tried things I read on internet, methods that mention how to activate the developer mode ability on an ios devide though WINDOWS, there were 2 but one I did not trust much, and even I think i tried it and in the end it did not work for some incompatibility making that method obsolete or something? the other I am not sure but probably same idea. I would like to know, how to activate the ABILITY to SHOW the option to activate the developer mode on iPAD (or any other device but for now I am focuson on iPad) please, and without using macbook or xcode!? Could Apple or anyone offer some guidance? That would help a fellow developer. Thank you. Ps. No I cant get the mac or xcode for now (but hopefully in a far future, but for now I can't). Thanks
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184
Sep ’25
Cannot compile a simple C++ program on Mac OS
I'm trying to compile a simple hello world C++ program on my MacBook Pro. I have a M3 Pro (Nov 2023) running Sequoia 15.6. The program is: #include <iostream> int main() { std::cout << "Hello World!"; return 0; } The error I get is: In file included from test.cpp:1: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/iostream:42: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ios:220: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__locale:15: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/shared_ptr.h:13: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__compare/compare_three_way.h:13: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__compare/three_way_comparable.h:12: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/__compare/common_comparison_category.h:15: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/cstddef:42:5: error: <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. This usually means that your header search paths are not configured properly. The header search paths should contain the C++ Standard Library headers before any C Standard Library, and you are probably using compiler flags that make that not be the case. 42 | # error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \ | ^ However, I can see stddef.h in /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/v1/ and in /usr/local/include
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184
Aug ’25
App crashing on startup
I am a developer working on an iOS enterprise application. When I deployed the release version to my device, it crashes upon startup. It works fine in debug mode on my device. The app is an upgraded version of Xamarin Form to .NET MAUI. I have attached a crash report. I would appreciate any help/insights on how to resolve. --John
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116
Apr ’25
system crashed when run java
My book env: MacBook Air Apple M4 15.6.1 (24G90) I installed JDK hs_err_pid6813.log by sdkman and homebrew, but when I ran java, os crashed: /opt/homebrew/o/openj/libexec/openjdk.jdk/Contents/Home/bin | stable ./javac --verison ABRT | 12:32:20 # # A fatal error has been detected by the Java Runtime Environment: # # SIGBUS (0xa) at pc=0x000000010211b340, pid=7237, tid=9987 # # JRE version: (21.0.7) (build ) # Java VM: OpenJDK 64-Bit Server VM (21.0.7, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, bsd-aarch64) # Problematic frame: # V [libjvm.dylib+0x35f340] CodeHeap::allocate(unsigned long)+0x15c # # No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again # # An error report file with more information is saved as: # /opt/homebrew/Cellar/openjdk@21/21.0.7/libexec/openjdk.jdk/Contents/Home/bin/hs_err_pid7237.log # # [1] 7237 abort ./javac --verison Does that mean I have to reinstall OSX?
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467
Sep ’25
libclang_rt.profile_driverkit.a' not found
Hi guys! I have gone through an absolute nightmare, trying to solve the issue that I am about to tell you about. As the title says, I am getting the error: Library '/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/17/lib/darwin/libclang_rt.profile_driverkit.a' not found I trimmed off part of that directory as I did not want to reveal that information about my computer. From what I can tell, the file in question is no longer even a part of Xcode. I have searched, it is not on my computer anywhere. I have also downloaded older versions of Xcode to search with it. None of them have it. I have literally tried everything under the Son to solve this issue. I have been stuck on it for two days. I have even resorted to doing something I hate, which is asking for ChatGPT to assist me with solving the issue. No help there. I am at my wits end. So I am coming to you guys, have you seen this error? Any ideas at all? The odds are pretty good whatever you recommend I have probably already tried 200 times over. But I am still open to hearing anything. Have any of you had this error? Any ideas? I am on the latest version of macOS. The project is for a macOS app. M4 Mac mini. Any additional information I can provide, that will be helpful? At this point, I am leaning more towards this being a bug with Xcode than anything.
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138
Aug ’25
Could you please add a feedback/question feature for the Apple Developer Documentation?
Routinely I'll have additional questions when browsing the Apple Developer Documentation. Would be really convenient if we could just submit that feedback from the documentation webpage itself, Apple could have the data, and potentially down the line address it; but at least you'd have the data. For example, I'm looking at the documentation for AttributedString: https://developer.apple.com/documentation/foundation/attributedstringprotocol/index(_:offsetbycharacters:) Now, I would like to know what would happen if the distance brought the position past the end, what would be returned. Because it's non-optional which I imagine would imply nil would be returned if the parameters were invalid. But it doesn't say. I run into these small missing behavioral details with some regularity and imagine others do as well. It would be really great if we could just submit that discrepancy and perhaps see some numbers on the page of the total number of discrepancies submitted or something so we can see that it's not just us and have some peace of mind that based on the amount of feedback submitted there's a higher chance that this discrepancy will be addressed in the future.
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97
Apr ’25
Static Framework from existing project
Good day, everyone. I've already spent two days trying to figure out if this is even possible: I have a working project with a huge number of SPM dependencies. We need to wrap all of this into a framework that can be easily connected to another project. Currently, following the instructions on Apple's documentation, I've done everything step by step. However, after connecting the library to a new project and writing import Framework, I get the error: Missing required modules: [list of all SPM from Framework] I thought that a static framework implied that all dependencies would be bundled into the project, but that didn't happen. Are there any ways to solve this problem? Thank you!
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247
Jan ’25
Apple SDKs should provide libunwind_ext.h on macOS
(Copy pasted from FB17261080 that I submitted) Hi: Apple's SDK (libSystem.B.tbd) provides definition for multiple symbols(__unw_add_dynamic_fde / __unw_add_find_dynamic_unwind_sections ), but doesn't provide corresponding headers, available in LLVM upstream as libunwind_ext.h We need such headers to write Exception-Enabled JIT Framework for macOS
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182
May ’25
Can I get notified when my watchOS app is terminated by the system (e.g. watchdog)?
Hi all, I’m developing a watchOS app and have seen cases where the app is terminated by the system — for example, due to CPU usage limits being exceeded (watchdog termination). Here’s a portion of one of the crash reports: Exception Type: EXC_CRASH (SIGKILL) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: CAROUSEL 2343432205 <RBSTerminateContext| domain:10 code:0x8BADF00D explanation:[app<app_name>:898] Failed to terminate gracefully after 5.0s ProcessVisibility: Foreground ProcessState: Running WatchdogEvent: process-exit WatchdogVisibility: Foreground WatchdogCPUStatistics: ( "Elapsed total CPU time (seconds): 11.280 (user 9.800, system 1.480), 100% CPU", "Elapsed application CPU time (seconds): 5.162, 46% CPU" ) reportType:CrashLog maxTerminationResistance:Interactive> My questions: 1.) Is there any way to get notified (via Crashlytics, Xcode Organizer, or any other reporting mechanism) when this type of system-level termination happens — similar to how we’re notified of crashes? 2.)Is there any way for a watchOS app to receive runtime warnings from the system when it’s about to exceed CPU or memory limits — similar to UIApplication.didReceiveMemoryWarningNotification on iOS? Thanks in advance!
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72
Apr ’25