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Xcode 16 and iOS 18 project not compiling
I updated Xcode and MacOS recently and haven't been able to compile my Flutter app on iOS devices/simulators since then. The error keeps changing every time I run it but here's one of the output in the terminal after running flutter run: Uncategorized (Xcode): Command SwiftGeneratePch emitted errors but did not return a nonzero exit code to indicate failure Error (Xcode): no such file or directory: '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation' Error (Xcode): stat cache file '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/SDKStatCaches.noindex/iphonesimulator18.0-22A3362- db63dc9361471f152f572502bdbfe70a.sdkstatcache' not found Error (Xcode): unable to rename temporary '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/3F9VRK3CXAUUD/UIKit-1KHQ7M05IF VXC-56601391.pcm.tmp' to output file '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/3F9VRK3CXAUUD/UIKit-1KHQ7M05IF VXC.pcm': 'No such file or directory' Error (Xcode): could not build module 'UIKit' /Users/chiragbhansali/Chirag/Coding/Projects/app/test/build/ios/Debug-iphonesimulator/Flutter.framewo rk/Headers/FlutterAppDelegate.h:7:8 Error (Xcode): could not build module 'Flutter' /Users/chiragbhansali/Chirag/Coding/Projects/app/test/ios/Runner/GeneratedPluginRegistrant.h:9:8 Error (Xcode): failed to emit precompiled header '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/Runner-eifcguceazlwumgsyzegclqdrbqt/Build/Intermed iates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_PB6A5GFLTNPC-clang_3F9VRK3CXAUUD.pch' for bridging header '/Users/chiragbhansali/Chirag/Coding/Projects/app/test/ios/Runner/Runner-Bridging-Header.h' Uncategorized (Xcode): Command PrecompileSwiftBridgingHeader emitted errors but did not return a nonzero exit code to indicate failure Uncategorized (Xcode): Command SwiftEmitModule failed with a nonzero exit code Uncategorized (Xcode): Command SwiftCompile failed with a nonzero exit code Could not build the application for the simulator. Error launching application on iPhone 16 Pro. What I have tried so far: Deleting iOS SDK and simulators Cleaning Xcode build cache using cmd+shift+k Creating a new Flutter project and trying to compile it (it failed so that reduces the chances of it being a Flutter issue) Clearing the DerivedData folder Clearing settings and cache of simulators Restarting laptop Versions: Xcode: 16.0 iOS: 18.0 MacOS: 15.1 (didn't work with 15.0 either) Flutter: 3.24
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17k
Dec ’25
Command line argument behaviour in macOS 15 after compiling with Xcode 16
I encountered this issue with an app I'm writing that accepts arguments. With some troubleshooting I've determined that this is an inherent behaviour in how Xcode 16 compiles SwiftUI apps and how macOS 15 launches them. The issue: Launching the app as open /Applications/AppName.app --args --arg1 --arg2 --arg3 etc should allow the app to process the arguments as CommandLine.arguments and this is still the case. How the app sees arguments is unchanged and doesn't matter if you use CommandLine.arguments or swift argument parser or don't have arguments at all. This will affect any SwiftUI app as I'll demonstrate below. The problem is that if you use a mix of arguments as --arg value pairs or --arg as a flag, then depending on the order the arguments are provides, the app won't launch properly. The icon will appear in the dock but no window appears until you click the icon in the dock. (BTW, having "Application is agent (UIElement)" set to YES in the Info.plist makes this task rather difficult.) In testing if you use all flags, it's fine. if the flags are in pairs, it's fine. if you have one flag and then a --arg value pair, you will see the issue. If you reverse the order so the flag is after then it works fine. How to replicate: On macOS 15 and Xcode 16 Open Xcode Create a new macOS App (called demoapp in my example) Select SwiftUI as the interface Build That it. Don't add anything and just build the boilerplate hello world app that Xcode makes for you. Once that's built, cd to your /Build/Products/Debug/ directory in terminal and try the following (this happens if you build for release as well): note, the app window will display when you click the icon in the dock, just not on initial launch # three single arguments open ./demoapp.app --args --foo --bar --baz # App window displays as expected # one single argument, one arg value pair open ./demoapp.app --args --foo --bar baz # The app window will not appear. # same arguments as before but the single argument is after the arg value pair open ./demoapp.app --args --bar baz --foo # App window displays as expected # arg[1] without `-` or `--` prefix open ./demoapp.app --args foo --bar --baz # The app window will not appear. # arg[1] and arg [2] without prefix open ./demoapp.app --args foo bar --baz # The app window will not appear. # single - in front of the first two arguments open ./demoapp.app --args -foo -bar baz # The app window will not appear. # single - in front of the first three arguments open ./demoapp.app --args -foo -bar -baz bob # App window displays as expected No idea what is going on but I suspect macOS does some pre-processing before launching the app, for example you can do stuff like open /Applications/SomeApp.app --args -AppleLanguages '(de)' to run using a specific language. I presume the OS is pre-processing arguments before launching the app proper. If I compile the app using Xcode 15.4 then this issue is not present. Also Apps compiled with Xcode 16 do not exhibit the issue on macOS 14 or earlier. It's a specific Xcode 16, macOS 15 thing in the way the app is compiled that makes it behave this way. I hope I've explained it correctly, but it's very easy to replicate. I filed a feedback for it (under a different apple account), FB15577018. Any insight into what's going on here would be helpful. Also if there's any compiler flags I could be setting. In my actual project, I'm not making any other changes. The same code compiled under Xcode 16 (.0 or .1RC) behaves differently to Xcode 15.4.
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684
May ’25
App alternative icon not working when archieve.
I add the following info in the build settings of my app. Then I also add the icon to my asset. I build the app, it works normally, but I notice that when I changed the icon to 'AppIcon-Defaults', The icon change alert didn't appear. but it succeeds . I uploaded the archive to App Store I got: ITMS-90895: Missing Icon - The Info.plist key CFBundleIcons.CFBundleAlternateIcons contains an entry “AppIcon-Defaults” that references asset “AppIcon-Defaults.” No such asset is present in the asset catalog. Then I use xcrun --sdk iphoneos assetutil --info Assets.car to check the assets inside the archieved app, It have the asset.
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595
Feb ’26
New linker in Command Line Tools 16 not working with BLOCK DATA
We've encountered a critical issue with the new linker of CLT16 (version 16.1.0.0.1.1729049160) that prevents proper initialization of BLOCK DATA. BLOCK DATA are used to initialize global variables in our Fortran code, and its failure to initialize those variables leads to a program crash. This affects our community of more that thousand scientists worldwide. The current workaround is using the -ld_classic linker option. However, this option is deprecated and will be removed in a future release, as described in the Xcode release note. I've attached a minimal example that reproduces the problem using GNU gfortran with the following instructions (the attached main.f.txt and bd.f.txt need to be rename to main.f and bd.f, respectively): gfortran -c bd.f gfortran -c main.f ar rv libtest.a bd.o main.o gfortran -ld_classic -o good.x -L. libtest.a gfortran -o bad.x -L. libtest.a Running the two programs, one can see that the BLOCK DATA are not initialised without the option ld_classic, $ > ./good.x 3.7273802569289098 2.8083922366048202 $ > ./bad.x 0.0000000000000000 0.0000000000000000 We kindly request your attention to this matter and a prompt solution or alternative workaround. Best regards main.f.txt bd.f.txt part.txt
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495
Jun ’25
No screenshot files in XCResult files using Xcode 16.1
Hello, I am using Xcode 16.1 (16B40) on MacOS Sequoia 15.1.0 using a Macbook pro M1 Max I am developing an app for iOS 17 and 18 using SwiftUI I created UITests to take the screenshots for the appStore on the simulator The tests run well and all of them are succeded The problem appears when I try to get the screenshot files from the xcresult files after the test. There is not any screenshot inside it. I found a data folder and a Info.plist file. In the data folder there are a lot of files with this pattern data.03zD4C6IGFFthK14NwA8mNvcwFHT16g6Tl40Tl1YmBC1bNh6d0YIcnWKyUaQPDXoa8fYo6C3Xcv8xvMtE3_NEXA== and other files with this pattern refs.03zD4C6IGFFthK14NwA8mNvcwFHT16g6Tl40Tl1YmBC1bNh6d0YIcnWKyUaQPDXoa8fYo6C3Xcv8xvMtE3_NEXA== Ok, I tryed to use fastlane to automatize the screenshots but the problem is still present. The xcresult files have not any png file. I had no problems doing this action (getting screenshots from a xcresult file) in previous versions of MacOS and Xcode in my current machine. I just updated my machine to MacOS Sequoia 15.1.1 and the problem is still present Honestly I don't know how to fix this situation. With Xcode 15 I had not any problem with that but I am not sure if Xcode 16.0 was runing without problems because I didn't need to use this functionality in those months Here is my code for a UITest: import XCTest final class ScreenshotsUITests: XCTestCase { let app = XCUIApplication() let device = "iPhone16" override func setUpWithError() throws { continueAfterFailure = true } override func tearDownWithError() throws {} @MainActor func testEnglishScreens() throws { let lang = "en" app.launchArguments.append("UITestMode") app.launchArguments += ["-AppleLanguages", "(en)"] app.launchArguments += ["-AppleLocale", "en_US"] app.launch() executeTestsForMenus(lang: lang, backLabel: "Back") executeTestForMatch(lang: lang) } @MainActor func testSpanishScreens() throws { let lang = "es" app.launchArguments.append("UITestMode") app.launchArguments += ["-AppleLanguages", "(es)"] app.launchArguments += ["-AppleLocale", "es_ES"] app.launch() executeTestsForMenus(lang: lang, backLabel: "Atrás") executeTestForMatch(lang: lang) } private func executeTestForMatch(lang: String) { let startButton = app.buttons["start-button"] startButton.tap() let key4 = app.buttons["key-4"] XCTAssertTrue(key4.waitForExistence(timeout: 30), "Key 4 in match screen is not found") key4.tap() let key2 = app.buttons["key-2"] XCTAssertTrue(key2.exists, "Key 2 in match screen is not found") key2.tap() makeScreenShot("playing", lang: lang) let closeButton = app.buttons["close-button"] XCTAssertTrue(closeButton.exists, "Close button in match screen is not found") closeButton.tap() } private func executeTestsForMenus(lang: String, backLabel: String) { let mainHeader = app.staticTexts["Math match"] XCTAssertTrue(mainHeader.exists, "Header in main screen is not found") makeScreenShot("mainMenu", lang: lang) let settingsButton = app.buttons["settings-button"] XCTAssertTrue(settingsButton.exists, "Settings button in main screen is not found") settingsButton.tap() makeScreenShot("Settings", lang: lang) let backButton = app.buttons[backLabel] XCTAssertTrue(backButton.exists, "Back button in match screen is not found") backButton.tap() let helpButton = app.buttons["help-button"] XCTAssertTrue(helpButton.exists, "Help button in main screen is not found") helpButton.tap() makeScreenShot("Help", lang: lang) backButton.tap() let scoreButton = app.buttons["score-button"] XCTAssertTrue(scoreButton.exists, "Scores button in main screen is not found") scoreButton.tap() makeScreenShot("Scores", lang: lang) backButton.tap() let playButton = app.buttons["play-button"] XCTAssertTrue(playButton.exists, "Play button in main screen is not found") playButton.tap() makeScreenShot("matchBuilder", lang: lang) let startButton = app.buttons["start-button"] XCTAssertTrue(startButton.exists, "Start button in match builder screen is not found") } private func makeScreenShot(_ name: String, lang: String) { takeScreenshot(app, named: "\(lang)-\(name)-\(device)") } } import XCTest extension XCTestCase { func takeScreenshot(_ app: XCUIApplication, named name: String, fullScreen: Bool = false) { let screenshot: XCUIScreenshot if fullScreen { screenshot = app.windows.firstMatch.screenshot() } else { screenshot = XCUIScreen.main.screenshot() } let screenshotAttachment = XCTAttachment( uniformTypeIdentifier: "public.png", name: "screenshot-\(name).png", payload: screenshot.pngRepresentation, userInfo: nil) screenshotAttachment.lifetime = .keepAlways add(screenshotAttachment) } } and here is the content of my testplan file: { "configurations" : [ { "id" : "35BC7C0B-9A5A-4027-9F30-36958C4C1AAF", "name" : "Test Scheme Action", "options" : { "preferredScreenCaptureFormat" : "screenshot", "testExecutionOrdering" : "random", "uiTestingScreenshotsLifetime" : "keepAlways", "userAttachmentLifetime" : "keepAlways" } } ], "defaultOptions" : { "targetForVariableExpansion" : { "containerPath" : "container:myAppProject.xcodeproj", "identifier" : "B27D1B022CA00314001A259B", "name" : "MyAppProject" } }, "testTargets" : [ { "parallelizable" : true, "target" : { "containerPath" : "container:MyAppProject.xcodeproj", "identifier" : "B27D1B122CA00315001A259B", "name" : "MyAppProjectTests" } }, { "parallelizable" : true, "target" : { "containerPath" : "container:MyAppProject.xcodeproj", "identifier" : "B27D1B1C2CA00315001A259B", "name" : "MyAppProjectUITests" } } ], "version" : 1 } I made tests with old projects in my machine and those projects have the same problem with screenshot files in the xcresult bundles I don't know if the problem is in my machine, my Xcode, MacOS or other ting. I don't know how to fix this problem Please, can anyone help me? Thanks in advance
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750
Apr ’25
SwiftUI: Command SwiftCompile failed with a nonzero exit code
I have a SwiftUI app that I've been working on in XCode 16.1. The project builds and runs in the simulators, on my mac and on my iPhone/iPad without any issues. I'm also able to build my unit test project and run them without any errors. The project has zero warnings in it. When I go to the Edit Schemes options and change the Run scheme to be a Release build with the Debug Executable unchecked I get a compiler error: Command SwiftCompile failed with a nonzero exit code I've attempted this Release Run with the following target devices in XCode: My iPhone 15 Pro Max (iOS 18.2 Beta 3) MacBook Air (M1) (15.2 Beta) iPhone 16 Simulator (iOS 18.1) Any iOS Simulator Device (arm64, x86_64) All 3 of these target have the same issue. Normally I would just debug the error from the logs but when I look at the build output I can't see any information in the log to tell me what happened. It looks like the source files are sent into the SwiftCompiler and the compiler fails without bubbling up the issue. I've provided the full error log export as a Gist HERE due to it's size. Is there anything in the log I'm missing? Is there a way for me to turn on more verbose logging during compilation of a Release Build? I created a brand new Multiplatform App in XCode and I added all of my source files to it. No project configuration settings were changed. I could build it successfully with the debug configuration. I then changed it to the Release configuration and experienced the same error. I can create another fresh project and make the same release configuration with none of my source files in it and get a successful build. I t seems there is something wrong with my source files and the release configuration but the compiler doesn't indicate what. I'm lost at this point as I can't figure out how to get a release build and can't seem to find any indication as to why.
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2.2k
Apr ’25
Xcode 16.1 (16B40) Stopped Building Universal Binaries
Anyone else notice that Xcode 16.1 seems to have stopped building universal binaries for both debug and release builds even though under "Build Settings-Build Active Architecture" both Debug and Release are set to NO. We had been using the universal binary builds out of Debug for preliminary tests on Intel based machines. The Architectures setting is set to: Standard Architectures (Apple Silicon, Intel) - $(ARCHS_STANDARD). I started a brand new empty app and it does the same thing. A workaround is to set the Destination in Xcode's menu bar to "Build on Any Mac" and then find the binary and drag it to the Intel computer. You can't run that one though from Xcode. Another workaround is to build an Archive and drag that one.
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988
Jun ’25
App Shortcuts Preview: No Matching Intent?
Hi! In neither Xcode 16.2 beta 3 nor Xcode 16.2 I am able to get App Shortcuts Preview to recognise my Shortcuts. In either supported language I always get "No Matching Intent" as the result. Flexible matching is enabled, minimum deployment target is iOS 18. The Shortcut phrases do work in the simulator and on device. Is this a known issue or am I missing something?
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748
Apr ’25
Xcode 16.0 syntax highlighting and autocompletion is broken for Swift packages with .binaryTarget
Syntax highlighting & code autocompletion is broken for Swift Packages wrapping an underlying binary target. Jump to defenition for module import shows the whole module interface and project builds & archives just fine, but any known workarounds to resurrect syntax assistant won't work without any errors/warnings. Replacing the .binaryTarget() with plain .target() with source code in package dependency brings all assistant features back. Steps to reproduce (project attached): Create a local Swift Package Add a dependency with binary target (for example — AppsFlyerFramework https://github.com/AppsFlyerSDK/AppsFlyerFramework) Try to use dependency product with binary dependency Attempted steps to fix: Full DD clean Full project clean ~15 min to index Xcode 16.0 & Sonoma 14.6.1, problem persists with Xcode16.2 & Sequoia. Radar #16035437
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408
May ’25
Error in gathering code coverage in Xcode16
Fails to gather code coverage and throws this error Showing All Messages Failed to merge raw profiles in directory /Users//Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370 to destination /Users//Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370/Coverage.profdata: Aggregation tool '/Users/shwethamugeraya/Downloads/Xcode 2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/llvm-profdata' failed with exit code 1: warning: /Users/shwethamugeraya/Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370/2F4EFBF7-1CCF-4E9E-8FD6-482EEDB98B6C-34646.profraw: raw profile version mismatch: Profile uses raw profile format version = 4; expected version = 8 PLEASE update this tool to version in the raw profile, or regenerate raw profile with expected version. error: no profile can be merged
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1.8k
Oct ’25
iOS app fails to run with Xcode 16 & less than iOS17.0 no issue with Xocde 15
When I build and rum my iOS app with xocde 16.0 or higher version with my 16.0 iOS, 17.0 iOS, if fails to run with error. (Library not loaded: /System/Library/Frameworks/SwiftUICore.framework/SwiftUICore) I found this error after update my macOS and xcode (Ventura -> Sequoia, Xcode 15.2 -> 16.2). I try to setting '-weak_framework SwiftUI' for solve this error with this post (https://forums.developer.apple.com/forums/thread/126506). But when applied, an error occurred in modify on all swiftUI. If a project is built with a simulator over 18 versions, it runs smoothly. *issue project is with tac or tuist. There are two projects in question, and each configuration is (1.17.0 tca + 4.37.0) / (tuist 3.4.0). Does anyone have any pointers as where I even start to debug this issue and narrow down on what's going on with Xcode 16?
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1.2k
Apr ’25
Sync IOS cursor to app cursor.
My app controls the cursor within its text area. Upon touching the screen the ios moves the cursor when dragging. The app cursor and the IOS cursor are now out of sync. Is there a way to set the app cursor to the IOS cursor? I have checked many sources to no avail. Thanks for your help. Charlie
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399
Jul ’25
LLDB error: type for self cannot be reconstructed: type for typename
All is fine in Xcode15, no LLDB errors whatsoever, but in Xcode16 I can't get any variable displayed in the console because of the following error: error: type for self cannot be reconstructed: type for typename "$......." was not found (cached) error: Couldn't realize Swift AST type of self. Hint: using `v` to directly inspect variables and fields may still work. I've checked the output of swift-healthcheck and there are several messages like this: SwiftASTContextForExpressions(module: "ROA", cu: "ROA+ViewLayer.swift")::LoadOneModule() -- Missing Swift module or Clang module found for "UIKit", "imported" via SwiftDWARFImporterDelegate. Hint: Register Swift modules with the linker using -add_ast_path. I added -add_ast_path to the OTHER_LDFLAGS in the faulty module's build settings but no luck. How can I debug my project in Xcode16?
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2.1k
May ’25
Using isActivityFullscreen to build applications in xcode 16 will crash in ios 17
My widget uses the @Environment(.isActivityFullscreen) variable. When running on ios 17, it will crash and report an error: dyld[55031]: Symbol not found: _$s7SwiftUI17EnvironmentValuesV9WidgetKitE20isActivityFullscreenSbvg Expected in: /Library/Developer/CoreSimulator/Volumes/iOS_21E213/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 17.4.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WidgetKit.framework/WidgetKit
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316
Jun ’25
Need to know how to stop indentation
Xcode 16 unindents lines if I choose a code-completion and I cannot find a way to stop this - does anybody know how to stop it? Here's a link to a gif demonstrating this problem - it's incredibly frustrating. https://i.imgur.com/jaDpzpb.gif Thanks in advance
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695
Apr ’25
Empty dSYM file detected & Error: type for self cannot be reconstructed: type for typename
I'm pulling my hair out here with this new Xcode 16, it complains that my app's dSYM is empty though it's clearly not, it's about 25MB. I'm working on a project using an internal static library, everything is built inhouse using swift, we own all the source code. It worked just fine until the other week, when I updated the Xcode, and now I can't debug anything. I keep getting "type for self cannot be reconstructed" when I run "po self.some_property". Why is that? The Debug information Format is set to DWARF with dSYM File for both the executable and lib projects. I've been a Unix guy since before I knew myself and I enjoy fixing things myself, down to bare metal, but man, this bug is driving me crazy. Is it even a bug?? It's the first time in more than 15 years since I started coding on Mac and iPhone when a bug has defeated me. I was always able to fix things using just the documentation and google, but the Apple toolchain is getting worse and worse nowadays. I remember the time when Apple made the complicated things simple, now they make the simple things complicated :( I just split the static lib from the main project one year ago, because of the ridiculously long build time. Should I merge back all the code in a single project? Something seems wrong to me. So I created this account to ask the masters. How can I get back my debug info (and sanity)? Using Xcode 15 is not an option because it doesn't run on Sequoia.
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1.1k
May ’25
Xcode 16.0 Can't detect my iPhone running iOS 18
Xcode Version is 16.0 (16A242d), The Xcode prompts "Xcode will continue when the operation completes."for a long time, and never dismiss.
Replies
1
Boosts
1
Views
405
Activity
May ’25
Xcode 16 and iOS 18 project not compiling
I updated Xcode and MacOS recently and haven't been able to compile my Flutter app on iOS devices/simulators since then. The error keeps changing every time I run it but here's one of the output in the terminal after running flutter run: Uncategorized (Xcode): Command SwiftGeneratePch emitted errors but did not return a nonzero exit code to indicate failure Error (Xcode): no such file or directory: '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation' Error (Xcode): stat cache file '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/SDKStatCaches.noindex/iphonesimulator18.0-22A3362- db63dc9361471f152f572502bdbfe70a.sdkstatcache' not found Error (Xcode): unable to rename temporary '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/3F9VRK3CXAUUD/UIKit-1KHQ7M05IF VXC-56601391.pcm.tmp' to output file '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/3F9VRK3CXAUUD/UIKit-1KHQ7M05IF VXC.pcm': 'No such file or directory' Error (Xcode): could not build module 'UIKit' /Users/chiragbhansali/Chirag/Coding/Projects/app/test/build/ios/Debug-iphonesimulator/Flutter.framewo rk/Headers/FlutterAppDelegate.h:7:8 Error (Xcode): could not build module 'Flutter' /Users/chiragbhansali/Chirag/Coding/Projects/app/test/ios/Runner/GeneratedPluginRegistrant.h:9:8 Error (Xcode): failed to emit precompiled header '/Users/chiragbhansali/Library/Developer/Xcode/DerivedData/Runner-eifcguceazlwumgsyzegclqdrbqt/Build/Intermed iates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_PB6A5GFLTNPC-clang_3F9VRK3CXAUUD.pch' for bridging header '/Users/chiragbhansali/Chirag/Coding/Projects/app/test/ios/Runner/Runner-Bridging-Header.h' Uncategorized (Xcode): Command PrecompileSwiftBridgingHeader emitted errors but did not return a nonzero exit code to indicate failure Uncategorized (Xcode): Command SwiftEmitModule failed with a nonzero exit code Uncategorized (Xcode): Command SwiftCompile failed with a nonzero exit code Could not build the application for the simulator. Error launching application on iPhone 16 Pro. What I have tried so far: Deleting iOS SDK and simulators Cleaning Xcode build cache using cmd+shift+k Creating a new Flutter project and trying to compile it (it failed so that reduces the chances of it being a Flutter issue) Clearing the DerivedData folder Clearing settings and cache of simulators Restarting laptop Versions: Xcode: 16.0 iOS: 18.0 MacOS: 15.1 (didn't work with 15.0 either) Flutter: 3.24
Replies
23
Boosts
3
Views
17k
Activity
Dec ’25
Command line argument behaviour in macOS 15 after compiling with Xcode 16
I encountered this issue with an app I'm writing that accepts arguments. With some troubleshooting I've determined that this is an inherent behaviour in how Xcode 16 compiles SwiftUI apps and how macOS 15 launches them. The issue: Launching the app as open /Applications/AppName.app --args --arg1 --arg2 --arg3 etc should allow the app to process the arguments as CommandLine.arguments and this is still the case. How the app sees arguments is unchanged and doesn't matter if you use CommandLine.arguments or swift argument parser or don't have arguments at all. This will affect any SwiftUI app as I'll demonstrate below. The problem is that if you use a mix of arguments as --arg value pairs or --arg as a flag, then depending on the order the arguments are provides, the app won't launch properly. The icon will appear in the dock but no window appears until you click the icon in the dock. (BTW, having "Application is agent (UIElement)" set to YES in the Info.plist makes this task rather difficult.) In testing if you use all flags, it's fine. if the flags are in pairs, it's fine. if you have one flag and then a --arg value pair, you will see the issue. If you reverse the order so the flag is after then it works fine. How to replicate: On macOS 15 and Xcode 16 Open Xcode Create a new macOS App (called demoapp in my example) Select SwiftUI as the interface Build That it. Don't add anything and just build the boilerplate hello world app that Xcode makes for you. Once that's built, cd to your /Build/Products/Debug/ directory in terminal and try the following (this happens if you build for release as well): note, the app window will display when you click the icon in the dock, just not on initial launch # three single arguments open ./demoapp.app --args --foo --bar --baz # App window displays as expected # one single argument, one arg value pair open ./demoapp.app --args --foo --bar baz # The app window will not appear. # same arguments as before but the single argument is after the arg value pair open ./demoapp.app --args --bar baz --foo # App window displays as expected # arg[1] without `-` or `--` prefix open ./demoapp.app --args foo --bar --baz # The app window will not appear. # arg[1] and arg [2] without prefix open ./demoapp.app --args foo bar --baz # The app window will not appear. # single - in front of the first two arguments open ./demoapp.app --args -foo -bar baz # The app window will not appear. # single - in front of the first three arguments open ./demoapp.app --args -foo -bar -baz bob # App window displays as expected No idea what is going on but I suspect macOS does some pre-processing before launching the app, for example you can do stuff like open /Applications/SomeApp.app --args -AppleLanguages '(de)' to run using a specific language. I presume the OS is pre-processing arguments before launching the app proper. If I compile the app using Xcode 15.4 then this issue is not present. Also Apps compiled with Xcode 16 do not exhibit the issue on macOS 14 or earlier. It's a specific Xcode 16, macOS 15 thing in the way the app is compiled that makes it behave this way. I hope I've explained it correctly, but it's very easy to replicate. I filed a feedback for it (under a different apple account), FB15577018. Any insight into what's going on here would be helpful. Also if there's any compiler flags I could be setting. In my actual project, I'm not making any other changes. The same code compiled under Xcode 16 (.0 or .1RC) behaves differently to Xcode 15.4.
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684
Activity
May ’25
App alternative icon not working when archieve.
I add the following info in the build settings of my app. Then I also add the icon to my asset. I build the app, it works normally, but I notice that when I changed the icon to 'AppIcon-Defaults', The icon change alert didn't appear. but it succeeds . I uploaded the archive to App Store I got: ITMS-90895: Missing Icon - The Info.plist key CFBundleIcons.CFBundleAlternateIcons contains an entry “AppIcon-Defaults” that references asset “AppIcon-Defaults.” No such asset is present in the asset catalog. Then I use xcrun --sdk iphoneos assetutil --info Assets.car to check the assets inside the archieved app, It have the asset.
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3
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595
Activity
Feb ’26
LiveActivities preview in XCode, Missing 'previewContext'
I'm trying to create a preview for my live activities when it's stale, so I created a preview provider. I followed some examples, but XCode says I'm missing preview context. Am I doing something wrong? I tried adding .previewContext(WidgetPreviewContext(family: .systemSmall)) but that doesn't seem to work.
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6
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847
Activity
May ’25
New linker in Command Line Tools 16 not working with BLOCK DATA
We've encountered a critical issue with the new linker of CLT16 (version 16.1.0.0.1.1729049160) that prevents proper initialization of BLOCK DATA. BLOCK DATA are used to initialize global variables in our Fortran code, and its failure to initialize those variables leads to a program crash. This affects our community of more that thousand scientists worldwide. The current workaround is using the -ld_classic linker option. However, this option is deprecated and will be removed in a future release, as described in the Xcode release note. I've attached a minimal example that reproduces the problem using GNU gfortran with the following instructions (the attached main.f.txt and bd.f.txt need to be rename to main.f and bd.f, respectively): gfortran -c bd.f gfortran -c main.f ar rv libtest.a bd.o main.o gfortran -ld_classic -o good.x -L. libtest.a gfortran -o bad.x -L. libtest.a Running the two programs, one can see that the BLOCK DATA are not initialised without the option ld_classic, $ > ./good.x 3.7273802569289098 2.8083922366048202 $ > ./bad.x 0.0000000000000000 0.0000000000000000 We kindly request your attention to this matter and a prompt solution or alternative workaround. Best regards main.f.txt bd.f.txt part.txt
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495
Activity
Jun ’25
No screenshot files in XCResult files using Xcode 16.1
Hello, I am using Xcode 16.1 (16B40) on MacOS Sequoia 15.1.0 using a Macbook pro M1 Max I am developing an app for iOS 17 and 18 using SwiftUI I created UITests to take the screenshots for the appStore on the simulator The tests run well and all of them are succeded The problem appears when I try to get the screenshot files from the xcresult files after the test. There is not any screenshot inside it. I found a data folder and a Info.plist file. In the data folder there are a lot of files with this pattern data.03zD4C6IGFFthK14NwA8mNvcwFHT16g6Tl40Tl1YmBC1bNh6d0YIcnWKyUaQPDXoa8fYo6C3Xcv8xvMtE3_NEXA== and other files with this pattern refs.03zD4C6IGFFthK14NwA8mNvcwFHT16g6Tl40Tl1YmBC1bNh6d0YIcnWKyUaQPDXoa8fYo6C3Xcv8xvMtE3_NEXA== Ok, I tryed to use fastlane to automatize the screenshots but the problem is still present. The xcresult files have not any png file. I had no problems doing this action (getting screenshots from a xcresult file) in previous versions of MacOS and Xcode in my current machine. I just updated my machine to MacOS Sequoia 15.1.1 and the problem is still present Honestly I don't know how to fix this situation. With Xcode 15 I had not any problem with that but I am not sure if Xcode 16.0 was runing without problems because I didn't need to use this functionality in those months Here is my code for a UITest: import XCTest final class ScreenshotsUITests: XCTestCase { let app = XCUIApplication() let device = "iPhone16" override func setUpWithError() throws { continueAfterFailure = true } override func tearDownWithError() throws {} @MainActor func testEnglishScreens() throws { let lang = "en" app.launchArguments.append("UITestMode") app.launchArguments += ["-AppleLanguages", "(en)"] app.launchArguments += ["-AppleLocale", "en_US"] app.launch() executeTestsForMenus(lang: lang, backLabel: "Back") executeTestForMatch(lang: lang) } @MainActor func testSpanishScreens() throws { let lang = "es" app.launchArguments.append("UITestMode") app.launchArguments += ["-AppleLanguages", "(es)"] app.launchArguments += ["-AppleLocale", "es_ES"] app.launch() executeTestsForMenus(lang: lang, backLabel: "Atrás") executeTestForMatch(lang: lang) } private func executeTestForMatch(lang: String) { let startButton = app.buttons["start-button"] startButton.tap() let key4 = app.buttons["key-4"] XCTAssertTrue(key4.waitForExistence(timeout: 30), "Key 4 in match screen is not found") key4.tap() let key2 = app.buttons["key-2"] XCTAssertTrue(key2.exists, "Key 2 in match screen is not found") key2.tap() makeScreenShot("playing", lang: lang) let closeButton = app.buttons["close-button"] XCTAssertTrue(closeButton.exists, "Close button in match screen is not found") closeButton.tap() } private func executeTestsForMenus(lang: String, backLabel: String) { let mainHeader = app.staticTexts["Math match"] XCTAssertTrue(mainHeader.exists, "Header in main screen is not found") makeScreenShot("mainMenu", lang: lang) let settingsButton = app.buttons["settings-button"] XCTAssertTrue(settingsButton.exists, "Settings button in main screen is not found") settingsButton.tap() makeScreenShot("Settings", lang: lang) let backButton = app.buttons[backLabel] XCTAssertTrue(backButton.exists, "Back button in match screen is not found") backButton.tap() let helpButton = app.buttons["help-button"] XCTAssertTrue(helpButton.exists, "Help button in main screen is not found") helpButton.tap() makeScreenShot("Help", lang: lang) backButton.tap() let scoreButton = app.buttons["score-button"] XCTAssertTrue(scoreButton.exists, "Scores button in main screen is not found") scoreButton.tap() makeScreenShot("Scores", lang: lang) backButton.tap() let playButton = app.buttons["play-button"] XCTAssertTrue(playButton.exists, "Play button in main screen is not found") playButton.tap() makeScreenShot("matchBuilder", lang: lang) let startButton = app.buttons["start-button"] XCTAssertTrue(startButton.exists, "Start button in match builder screen is not found") } private func makeScreenShot(_ name: String, lang: String) { takeScreenshot(app, named: "\(lang)-\(name)-\(device)") } } import XCTest extension XCTestCase { func takeScreenshot(_ app: XCUIApplication, named name: String, fullScreen: Bool = false) { let screenshot: XCUIScreenshot if fullScreen { screenshot = app.windows.firstMatch.screenshot() } else { screenshot = XCUIScreen.main.screenshot() } let screenshotAttachment = XCTAttachment( uniformTypeIdentifier: "public.png", name: "screenshot-\(name).png", payload: screenshot.pngRepresentation, userInfo: nil) screenshotAttachment.lifetime = .keepAlways add(screenshotAttachment) } } and here is the content of my testplan file: { "configurations" : [ { "id" : "35BC7C0B-9A5A-4027-9F30-36958C4C1AAF", "name" : "Test Scheme Action", "options" : { "preferredScreenCaptureFormat" : "screenshot", "testExecutionOrdering" : "random", "uiTestingScreenshotsLifetime" : "keepAlways", "userAttachmentLifetime" : "keepAlways" } } ], "defaultOptions" : { "targetForVariableExpansion" : { "containerPath" : "container:myAppProject.xcodeproj", "identifier" : "B27D1B022CA00314001A259B", "name" : "MyAppProject" } }, "testTargets" : [ { "parallelizable" : true, "target" : { "containerPath" : "container:MyAppProject.xcodeproj", "identifier" : "B27D1B122CA00315001A259B", "name" : "MyAppProjectTests" } }, { "parallelizable" : true, "target" : { "containerPath" : "container:MyAppProject.xcodeproj", "identifier" : "B27D1B1C2CA00315001A259B", "name" : "MyAppProjectUITests" } } ], "version" : 1 } I made tests with old projects in my machine and those projects have the same problem with screenshot files in the xcresult bundles I don't know if the problem is in my machine, my Xcode, MacOS or other ting. I don't know how to fix this problem Please, can anyone help me? Thanks in advance
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750
Activity
Apr ’25
SwiftUI: Command SwiftCompile failed with a nonzero exit code
I have a SwiftUI app that I've been working on in XCode 16.1. The project builds and runs in the simulators, on my mac and on my iPhone/iPad without any issues. I'm also able to build my unit test project and run them without any errors. The project has zero warnings in it. When I go to the Edit Schemes options and change the Run scheme to be a Release build with the Debug Executable unchecked I get a compiler error: Command SwiftCompile failed with a nonzero exit code I've attempted this Release Run with the following target devices in XCode: My iPhone 15 Pro Max (iOS 18.2 Beta 3) MacBook Air (M1) (15.2 Beta) iPhone 16 Simulator (iOS 18.1) Any iOS Simulator Device (arm64, x86_64) All 3 of these target have the same issue. Normally I would just debug the error from the logs but when I look at the build output I can't see any information in the log to tell me what happened. It looks like the source files are sent into the SwiftCompiler and the compiler fails without bubbling up the issue. I've provided the full error log export as a Gist HERE due to it's size. Is there anything in the log I'm missing? Is there a way for me to turn on more verbose logging during compilation of a Release Build? I created a brand new Multiplatform App in XCode and I added all of my source files to it. No project configuration settings were changed. I could build it successfully with the debug configuration. I then changed it to the Release configuration and experienced the same error. I can create another fresh project and make the same release configuration with none of my source files in it and get a successful build. I t seems there is something wrong with my source files and the release configuration but the compiler doesn't indicate what. I'm lost at this point as I can't figure out how to get a release build and can't seem to find any indication as to why.
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2.2k
Activity
Apr ’25
Xcode 16.1 (16B40) Stopped Building Universal Binaries
Anyone else notice that Xcode 16.1 seems to have stopped building universal binaries for both debug and release builds even though under "Build Settings-Build Active Architecture" both Debug and Release are set to NO. We had been using the universal binary builds out of Debug for preliminary tests on Intel based machines. The Architectures setting is set to: Standard Architectures (Apple Silicon, Intel) - $(ARCHS_STANDARD). I started a brand new empty app and it does the same thing. A workaround is to set the Destination in Xcode's menu bar to "Build on Any Mac" and then find the binary and drag it to the Intel computer. You can't run that one though from Xcode. Another workaround is to build an Archive and drag that one.
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988
Activity
Jun ’25
How do I add file group?(Xcode16.1)
They said something like hold option or whatever but It didn't seems to work with me...
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2
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615
Activity
Apr ’25
App Shortcuts Preview: No Matching Intent?
Hi! In neither Xcode 16.2 beta 3 nor Xcode 16.2 I am able to get App Shortcuts Preview to recognise my Shortcuts. In either supported language I always get "No Matching Intent" as the result. Flexible matching is enabled, minimum deployment target is iOS 18. The Shortcut phrases do work in the simulator and on device. Is this a known issue or am I missing something?
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8
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748
Activity
Apr ’25
Xcode 16.0 syntax highlighting and autocompletion is broken for Swift packages with .binaryTarget
Syntax highlighting & code autocompletion is broken for Swift Packages wrapping an underlying binary target. Jump to defenition for module import shows the whole module interface and project builds & archives just fine, but any known workarounds to resurrect syntax assistant won't work without any errors/warnings. Replacing the .binaryTarget() with plain .target() with source code in package dependency brings all assistant features back. Steps to reproduce (project attached): Create a local Swift Package Add a dependency with binary target (for example — AppsFlyerFramework https://github.com/AppsFlyerSDK/AppsFlyerFramework) Try to use dependency product with binary dependency Attempted steps to fix: Full DD clean Full project clean ~15 min to index Xcode 16.0 & Sonoma 14.6.1, problem persists with Xcode16.2 & Sequoia. Radar #16035437
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408
Activity
May ’25
Bug: Xcode Refactor -> Rename with Conditional Compilation
When renaming A.value, it also causes the value inside the conditional compilation in checkRename to be renamed. How to resolve or avoid this situation? class A { let value = "1" } class B { var value = 0 } func checkRename() { var b = B() #if os(iOS) b.value = 456 #elseif os(macOS) b.value = 789 #endif } Xcode Version 15.4 (15F31d).
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241
Activity
Jun ’25
Error in gathering code coverage in Xcode16
Fails to gather code coverage and throws this error Showing All Messages Failed to merge raw profiles in directory /Users//Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370 to destination /Users//Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370/Coverage.profdata: Aggregation tool '/Users/shwethamugeraya/Downloads/Xcode 2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/llvm-profdata' failed with exit code 1: warning: /Users/shwethamugeraya/Library/Developer/Xcode/DerivedData/Receiver-ekqrbpsaciuxmlfslviajhoecyat/Build/ProfileData/0B0C6B69-FD46-4801-B106-56B7FCD44370/2F4EFBF7-1CCF-4E9E-8FD6-482EEDB98B6C-34646.profraw: raw profile version mismatch: Profile uses raw profile format version = 4; expected version = 8 PLEASE update this tool to version in the raw profile, or regenerate raw profile with expected version. error: no profile can be merged
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Activity
Oct ’25
iOS app fails to run with Xcode 16 & less than iOS17.0 no issue with Xocde 15
When I build and rum my iOS app with xocde 16.0 or higher version with my 16.0 iOS, 17.0 iOS, if fails to run with error. (Library not loaded: /System/Library/Frameworks/SwiftUICore.framework/SwiftUICore) I found this error after update my macOS and xcode (Ventura -> Sequoia, Xcode 15.2 -> 16.2). I try to setting '-weak_framework SwiftUI' for solve this error with this post (https://forums.developer.apple.com/forums/thread/126506). But when applied, an error occurred in modify on all swiftUI. If a project is built with a simulator over 18 versions, it runs smoothly. *issue project is with tac or tuist. There are two projects in question, and each configuration is (1.17.0 tca + 4.37.0) / (tuist 3.4.0). Does anyone have any pointers as where I even start to debug this issue and narrow down on what's going on with Xcode 16?
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3
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Activity
Apr ’25
Sync IOS cursor to app cursor.
My app controls the cursor within its text area. Upon touching the screen the ios moves the cursor when dragging. The app cursor and the IOS cursor are now out of sync. Is there a way to set the app cursor to the IOS cursor? I have checked many sources to no avail. Thanks for your help. Charlie
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399
Activity
Jul ’25
LLDB error: type for self cannot be reconstructed: type for typename
All is fine in Xcode15, no LLDB errors whatsoever, but in Xcode16 I can't get any variable displayed in the console because of the following error: error: type for self cannot be reconstructed: type for typename "$......." was not found (cached) error: Couldn't realize Swift AST type of self. Hint: using `v` to directly inspect variables and fields may still work. I've checked the output of swift-healthcheck and there are several messages like this: SwiftASTContextForExpressions(module: "ROA", cu: "ROA+ViewLayer.swift")::LoadOneModule() -- Missing Swift module or Clang module found for "UIKit", "imported" via SwiftDWARFImporterDelegate. Hint: Register Swift modules with the linker using -add_ast_path. I added -add_ast_path to the OTHER_LDFLAGS in the faulty module's build settings but no luck. How can I debug my project in Xcode16?
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Activity
May ’25
Using isActivityFullscreen to build applications in xcode 16 will crash in ios 17
My widget uses the @Environment(.isActivityFullscreen) variable. When running on ios 17, it will crash and report an error: dyld[55031]: Symbol not found: _$s7SwiftUI17EnvironmentValuesV9WidgetKitE20isActivityFullscreenSbvg Expected in: /Library/Developer/CoreSimulator/Volumes/iOS_21E213/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 17.4.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WidgetKit.framework/WidgetKit
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316
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Jun ’25
Need to know how to stop indentation
Xcode 16 unindents lines if I choose a code-completion and I cannot find a way to stop this - does anybody know how to stop it? Here's a link to a gif demonstrating this problem - it's incredibly frustrating. https://i.imgur.com/jaDpzpb.gif Thanks in advance
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14
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695
Activity
Apr ’25
Empty dSYM file detected & Error: type for self cannot be reconstructed: type for typename
I'm pulling my hair out here with this new Xcode 16, it complains that my app's dSYM is empty though it's clearly not, it's about 25MB. I'm working on a project using an internal static library, everything is built inhouse using swift, we own all the source code. It worked just fine until the other week, when I updated the Xcode, and now I can't debug anything. I keep getting "type for self cannot be reconstructed" when I run "po self.some_property". Why is that? The Debug information Format is set to DWARF with dSYM File for both the executable and lib projects. I've been a Unix guy since before I knew myself and I enjoy fixing things myself, down to bare metal, but man, this bug is driving me crazy. Is it even a bug?? It's the first time in more than 15 years since I started coding on Mac and iPhone when a bug has defeated me. I was always able to fix things using just the documentation and google, but the Apple toolchain is getting worse and worse nowadays. I remember the time when Apple made the complicated things simple, now they make the simple things complicated :( I just split the static lib from the main project one year ago, because of the ridiculously long build time. Should I merge back all the code in a single project? Something seems wrong to me. So I created this account to ask the masters. How can I get back my debug info (and sanity)? Using Xcode 15 is not an option because it doesn't run on Sequoia.
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May ’25