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Reply to Apple Silicon calling printf
#if defined(__APPLE__) .global _main // Provide program starting address to linker Mac OS _main: #else .global main // Raspian and Linux main: #endif // stack frame work setup START stp x29, x30, [sp, -16]! str x20, [sp, -16]! mov x29, sp // stack frame work setup END // setup printf call #if defined(__APPLE__) adrp x0, fOutputStr@PAGE add x0, x0, fOutputStr@PAGEOFF #else ldr x0, =fOutputStr #endif mov w1, #4 mov w2, #9 print_brk: #if defined(__APPLE__) stp X0, X1, [SP, #-16]! stp X2, X3, [SP, #-16]! bl _printf ldp X2, X3, [SP], #16 ldp X0, X1, [SP], #16 #else bl printf #endif done: // closing stack frame work ldr x20, [sp],16 ldp x29, x30, [sp],16 // exit mov w0, wzr ret .data .align 4 // intArrayPtr: .word 3,7,5,2,4,8 // word, each value is offset by 4 fOutputStr: .asciz Element[%d] = %dn // formated output string
Topic: Programming Languages SubTopic: General Tags:
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Apple Silicon calling printf
What is the proper way to pass arguments to printf with multiple variables using ARM64 Apple Silicon? Example: fOutputStr: .asciz Element[%d] = %dn // formated output string for an output of: Element[4] = 9 This code (see below) works on Raspberry Pi 5, on my Mac Studio, I am getting this output, Element[9] = 1871655168 What do I need to do to use printf from an assembly language call with multiple variables? I am using the following code. ` .align 2 // memory alignment model for 64-bit ARMc #if defined(APPLE) .global _main // Provide program starting address to linker Mac OS _main: #else .global main // Raspian and Linux main: #endif // stack frame work setup START stp x29, x30, [sp, -16]! str x20, [sp, -16]! mov x29, sp // stack frame work setup END // setup printf call #if defined(APPLE) adrp x0, fOutputStr@PAGE add x0, x0, fOutputStr@PAGEOFF #else ldr x0, =fOutputStr #endif mov w1, #4 mov w2, #9 print_brk: #if defined(APPLE) stp X0, X1, [SP, #-16]! stp X2, X3, [SP, #-16
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Reply to Is it a bug in UIActivityViewController to Airdrop ?
I filed a bug report with an sample project and 2 files for testing. I confirm the problem. FB22253128 Here the message in FB (with the zipped sample project and 2 test files): Context: Xcode 26.3, iOS 18.7.6 on iPhone Xs In this iOS app, I call UIActivityViewController to let user Airdrop files from the app. When trying to send a URL whose file name contains some characters like accentuated (-, é, '), the transfer fails. Removing those characters makes it work without problem. Steps to reproduce Build and load the app on iPhone transfer the 2 pdf files ('name accentué.pdf' and 'name plain.pdf' to the Documents folder of Test app (I did it in Finder on Mac with iPhone USB connected to the Mac). The 2 files are identical except their name. Run the app Tap 'Send by AirDrop name plain.pdf' and select AirDrop to Mac : Transfer OK Tap 'Send by AirDrop name accentué.pdf' and select AirDrop to Mac : Transfer fails
Topic: UI Frameworks SubTopic: UIKit Tags:
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Notarization Requests In Progress
Hello, I am following up on several notarization requests in order to understand the process better. I submitted my first notary request yesterday and it took several hours to complete (where I submitted two other requests along the way thinking they may be stuck). They were all accepted after ~3 hours had passed since the first request was made. In that time I discovered a bug and had to rebuild/codesign, and submitted to notarize again. I've now had two requests with the new build (.zip file) in progress for ~18 hours. The bug fix I made between builds was innocuous and I'm wondering if my jobs are getting flagged due to recent account lockouts when I was first setting up my organizations' developer account. I've seen several replies here in the forum from DTS Engineers - hi Quinn :), so I'm aware of the possibility of 'rare' in-depth analysis, however I've experienced it in 100% of my requests. What is causing my requests to always require in-depth analysis and is there anything I can do to prevent it? My
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Charged twice for Developer Program enrollment, account still pending
Hello everyone, I’m running into an issue with my Apple Developer Program enrollment and hoping someone here or an Apple staff member can point me in the right direction. I tried to pay the annual fee, but my account status wasn't updating. Thinking the transaction had failed, I tried to make the payment a second time a few days later. Because of this, my credit card was actually charged twice. The charges appear on my bank statement as: February 19 (R$ 543.16 BRL) February 23 (R$ 536.70 BRL) Despite both payments clearing on my end, it is now March 16 and my account still shows as pending. My enrollment has not been approved yet. Has anyone else experienced this kind of delay? What is the best way to get Apple to activate the account using one of these payments and issue a refund for the duplicate charge? I have all the bank statements ready to show support, but the process has been completely stuck. Thank you in advance for any advice.
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Reply to XProtect makes app hang when running an AppleScript
Consider this: Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x0000000102c799bc This typically means that the app trapped, that is, it detected an internal error and deliberately crashed. For example, if you force unwrap an option that’s nil, you’ll trap like this. Now look at the backtrace: Thread 1 Crashed:: Dispatch queue: com.apple.root.utility-qos 0 DIM … 0x102c6c000 + 55740 1 DIM … 0x102c6c000 + 128212 2 libdispatch.dylib … _dispatch_call_block_and_release + 32 3 libdispatch.dylib … _dispatch_client_callout + 16 4 libdispatch.dylib … + 32 5 libdispatch.dylib … _dispatch_root_queue_drain + 736 6 libdispatch.dylib … _dispatch_worker_thread2 + 180 7 libsystem_pthread.dylib … _pthread_wqthread + 232 8 libsystem_pthread.dylib … start_wqthread + 8 frames 8 through 2 are Dispatch (GCD) machinery. Frame 1 is your code, which calls frame 0, which trapped. To learn more about this you need to symbolicate frames 1 and 0. See Adding identifiable symbol names to a crash repor
Topic: Privacy & Security SubTopic: General Tags:
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Reply to Recording a Packet Trace
Do you work in a managed environment? I sometimes see reports like by folks who work in high-security industries, like health or finance. Their network, Mac, or device is locked down in some way that breaks this tooling. It’s hard to offer specific advice in that case, because these setups are very site specific, but I do have a few general hints: If you have a Mac laptop, you can relocate it to a different network. For example, you might run this test at home. Rather than running the proxy on your main work Mac, run it on a ‘victim’ Mac. For example, I often have great success using Mac-on-Mac virtualisation. Test with a victim ‘device’ that’s unmanaged. Or if you test device is managed, try a different device, like your own personal iPhone. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Issue with getting my IPhone 13 Pro Max into developer mode???
hello and thank you for reading . I am having an issue with getting my phone -13 pro max - into developer mode I have tried all the basic ways and have tried some with help from Ai. But still haven’t gotten my phone into dev mode? Any tricks the for sure work or what should I do ? There is another option I have t tried but don’t have my laptop or access to a computer currently. would very much app help with this thank you in advance .
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Apple Pay In-App Provisioning – Apple server failure when adding a card
We are implementing Apple Pay In-App Provisioning in our issuer iOS application and are encountering a HTTP 500 error returned from Apple servers during the provisioning flow. The issue occurs after generating the encrypted payload and attempting to complete the provisioning process. The Apple service responds with 500 Internal Server Error, preventing the card from being added to Wallet. We would appreciate assistance identifying whether this is caused by: • a payload formatting issue, • cryptographic material mismatch, • entitlement / configuration issue, • or a server-side issue. Environment Platform • iOS: 26.3.1 • Device: iPhone 13 mini • Xcode: 26.3.1 Apple Pay configuration • In-App Provisioning entitlement enabled • Issuer app authorized by Apple for provisioning • Payment Network: Mastercard • Token Service Provider (TSP): MDES Testing environment • Production • App distribution method: TestFlight Provisioning Flow Overview Our implementation follows the standard Apple Pay In-App Provisionin
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Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
This is strange! no body seems to mention it, but I get redirected to https://ppq-ext.v.aaplimg.com/ which in turn throws a SSL mismatch error! $ curl -I ppq.apple.com HTTP/1.1 301 Moved Permanently Server: Apple Date: Mon, 16 Mar 2026 12:11:11 GMT Content-Type: text/html Content-Length: 162 Connection: keep-alive Location: https://ppq-ext.v.aaplimg.com/ $ curl https://ppq-ext.v.aaplimg.com/ curl: (60) SSL: no alternative certificate subject name matches target host name 'ppq-ext.v.aaplimg.com' More details here: https://curl.se/docs/sslcerts.html curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above.
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Static library links on device but fails on iOS Simulator
I’m working on an iOS workspace with: a static library project: M800SDK a test app project: TestAppObj I was able to build M800SDK for iOS Simulator on Apple Silicon as a simulator static library, and I also verified the architectures in the produced .a file. However, when I link the app target against that simulator build and try to build TestAppObj for iOS Simulator, I get the following linker errors: Undefined symbols for architecture arm64: _OBJC_CLASS_$_TokenMngr clang++: error: linker command failed with exit code 1 Additional context: The library links and works correctly when building the app for a physical iPhone. And the public header TokenMngr.h is found correctly by the app target. The app target is compiled as Objective-C++ where needed. The library is linked in the app target under “Link Binary With Libraries”. Could you help me understand: Is it possible to run on iOS Simulator ? the recommended way to package and consume this library for iOS Simulator on Apple Silicon? Also I am aware
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Reply to Recording a Packet Trace
Thank you for the detailed instructions, I still cannot get it to work though. My Mac is running macOS 15.7.4 and my iPhone is on iOS 26.3.1, but step 9 invariably fails. I even tried messing with the system firewall settings, allowing all incoming connections to mitmproxy and disabling the firewall altogether, but still no luck.
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Instruments Malfunction
I’m reporting a severe reproducible issue in Instruments, specifically when using the SwiftUI instrument and opening Show Cause & Effect Graph. What happens: • Instruments becomes extremely laggy/unresponsive • The graph/detail area can turn solid magenta/pink • Memory usage rapidly increases (I observed around 18 GB, 25 GB, and up to 34 GB) • My Mac has crashed/restarted during this, or in other terms, had a kernel panic, where my Mac froze, and everything unresponsive. The Trackpad wouldn't even click. Important detail: • I could not find a generated kernel panic log after the crash/restart. Repro context: • SwiftUI iOS app profiled from Xcode • Trigger is specifically entering Show Cause & Effect Graph • Recordings can be short and still trigger it • Issue is much less severe or absent if I avoid that view What I already tried: • Rebooting • Short captures / fewer instruments • Clearing Xcode/Instruments caches/preferences • Retesting after cleanup • Reinstalling Xcode Is this a known Instruments r
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Reply to Apple Silicon calling printf
#if defined(__APPLE__) .global _main // Provide program starting address to linker Mac OS _main: #else .global main // Raspian and Linux main: #endif // stack frame work setup START stp x29, x30, [sp, -16]! str x20, [sp, -16]! mov x29, sp // stack frame work setup END // setup printf call #if defined(__APPLE__) adrp x0, fOutputStr@PAGE add x0, x0, fOutputStr@PAGEOFF #else ldr x0, =fOutputStr #endif mov w1, #4 mov w2, #9 print_brk: #if defined(__APPLE__) stp X0, X1, [SP, #-16]! stp X2, X3, [SP, #-16]! bl _printf ldp X2, X3, [SP], #16 ldp X0, X1, [SP], #16 #else bl printf #endif done: // closing stack frame work ldr x20, [sp],16 ldp x29, x30, [sp],16 // exit mov w0, wzr ret .data .align 4 // intArrayPtr: .word 3,7,5,2,4,8 // word, each value is offset by 4 fOutputStr: .asciz Element[%d] = %dn // formated output string
Topic: Programming Languages SubTopic: General Tags:
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2w
Apple Silicon calling printf
What is the proper way to pass arguments to printf with multiple variables using ARM64 Apple Silicon? Example: fOutputStr: .asciz Element[%d] = %dn // formated output string for an output of: Element[4] = 9 This code (see below) works on Raspberry Pi 5, on my Mac Studio, I am getting this output, Element[9] = 1871655168 What do I need to do to use printf from an assembly language call with multiple variables? I am using the following code. ` .align 2 // memory alignment model for 64-bit ARMc #if defined(APPLE) .global _main // Provide program starting address to linker Mac OS _main: #else .global main // Raspian and Linux main: #endif // stack frame work setup START stp x29, x30, [sp, -16]! str x20, [sp, -16]! mov x29, sp // stack frame work setup END // setup printf call #if defined(APPLE) adrp x0, fOutputStr@PAGE add x0, x0, fOutputStr@PAGEOFF #else ldr x0, =fOutputStr #endif mov w1, #4 mov w2, #9 print_brk: #if defined(APPLE) stp X0, X1, [SP, #-16]! stp X2, X3, [SP, #-16
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Reply to Is it a bug in UIActivityViewController to Airdrop ?
I filed a bug report with an sample project and 2 files for testing. I confirm the problem. FB22253128 Here the message in FB (with the zipped sample project and 2 test files): Context: Xcode 26.3, iOS 18.7.6 on iPhone Xs In this iOS app, I call UIActivityViewController to let user Airdrop files from the app. When trying to send a URL whose file name contains some characters like accentuated (-, é, '), the transfer fails. Removing those characters makes it work without problem. Steps to reproduce Build and load the app on iPhone transfer the 2 pdf files ('name accentué.pdf' and 'name plain.pdf' to the Documents folder of Test app (I did it in Finder on Mac with iPhone USB connected to the Mac). The 2 files are identical except their name. Run the app Tap 'Send by AirDrop name plain.pdf' and select AirDrop to Mac : Transfer OK Tap 'Send by AirDrop name accentué.pdf' and select AirDrop to Mac : Transfer fails
Topic: UI Frameworks SubTopic: UIKit Tags:
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Notarization Requests In Progress
Hello, I am following up on several notarization requests in order to understand the process better. I submitted my first notary request yesterday and it took several hours to complete (where I submitted two other requests along the way thinking they may be stuck). They were all accepted after ~3 hours had passed since the first request was made. In that time I discovered a bug and had to rebuild/codesign, and submitted to notarize again. I've now had two requests with the new build (.zip file) in progress for ~18 hours. The bug fix I made between builds was innocuous and I'm wondering if my jobs are getting flagged due to recent account lockouts when I was first setting up my organizations' developer account. I've seen several replies here in the forum from DTS Engineers - hi Quinn :), so I'm aware of the possibility of 'rare' in-depth analysis, however I've experienced it in 100% of my requests. What is causing my requests to always require in-depth analysis and is there anything I can do to prevent it? My
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1
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0
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129
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2w
Charged twice for Developer Program enrollment, account still pending
Hello everyone, I’m running into an issue with my Apple Developer Program enrollment and hoping someone here or an Apple staff member can point me in the right direction. I tried to pay the annual fee, but my account status wasn't updating. Thinking the transaction had failed, I tried to make the payment a second time a few days later. Because of this, my credit card was actually charged twice. The charges appear on my bank statement as: February 19 (R$ 543.16 BRL) February 23 (R$ 536.70 BRL) Despite both payments clearing on my end, it is now March 16 and my account still shows as pending. My enrollment has not been approved yet. Has anyone else experienced this kind of delay? What is the best way to get Apple to activate the account using one of these payments and issue a refund for the duplicate charge? I have all the bank statements ready to show support, but the process has been completely stuck. Thank you in advance for any advice.
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0
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31
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Reply to XProtect makes app hang when running an AppleScript
Consider this: Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x0000000102c799bc This typically means that the app trapped, that is, it detected an internal error and deliberately crashed. For example, if you force unwrap an option that’s nil, you’ll trap like this. Now look at the backtrace: Thread 1 Crashed:: Dispatch queue: com.apple.root.utility-qos 0 DIM … 0x102c6c000 + 55740 1 DIM … 0x102c6c000 + 128212 2 libdispatch.dylib … _dispatch_call_block_and_release + 32 3 libdispatch.dylib … _dispatch_client_callout + 16 4 libdispatch.dylib … + 32 5 libdispatch.dylib … _dispatch_root_queue_drain + 736 6 libdispatch.dylib … _dispatch_worker_thread2 + 180 7 libsystem_pthread.dylib … _pthread_wqthread + 232 8 libsystem_pthread.dylib … start_wqthread + 8 frames 8 through 2 are Dispatch (GCD) machinery. Frame 1 is your code, which calls frame 0, which trapped. To learn more about this you need to symbolicate frames 1 and 0. See Adding identifiable symbol names to a crash repor
Topic: Privacy & Security SubTopic: General Tags:
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Reply to Recording a Packet Trace
Do you work in a managed environment? I sometimes see reports like by folks who work in high-security industries, like health or finance. Their network, Mac, or device is locked down in some way that breaks this tooling. It’s hard to offer specific advice in that case, because these setups are very site specific, but I do have a few general hints: If you have a Mac laptop, you can relocate it to a different network. For example, you might run this test at home. Rather than running the proxy on your main work Mac, run it on a ‘victim’ Mac. For example, I often have great success using Mac-on-Mac virtualisation. Test with a victim ‘device’ that’s unmanaged. Or if you test device is managed, try a different device, like your own personal iPhone. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Issue with getting my IPhone 13 Pro Max into developer mode???
hello and thank you for reading . I am having an issue with getting my phone -13 pro max - into developer mode I have tried all the basic ways and have tried some with help from Ai. But still haven’t gotten my phone into dev mode? Any tricks the for sure work or what should I do ? There is another option I have t tried but don’t have my laptop or access to a computer currently. would very much app help with this thank you in advance .
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1
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27
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Apple Pay In-App Provisioning – Apple server failure when adding a card
We are implementing Apple Pay In-App Provisioning in our issuer iOS application and are encountering a HTTP 500 error returned from Apple servers during the provisioning flow. The issue occurs after generating the encrypted payload and attempting to complete the provisioning process. The Apple service responds with 500 Internal Server Error, preventing the card from being added to Wallet. We would appreciate assistance identifying whether this is caused by: • a payload formatting issue, • cryptographic material mismatch, • entitlement / configuration issue, • or a server-side issue. Environment Platform • iOS: 26.3.1 • Device: iPhone 13 mini • Xcode: 26.3.1 Apple Pay configuration • In-App Provisioning entitlement enabled • Issuer app authorized by Apple for provisioning • Payment Network: Mastercard • Token Service Provider (TSP): MDES Testing environment • Production • App distribution method: TestFlight Provisioning Flow Overview Our implementation follows the standard Apple Pay In-App Provisionin
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62
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Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
This is strange! no body seems to mention it, but I get redirected to https://ppq-ext.v.aaplimg.com/ which in turn throws a SSL mismatch error! $ curl -I ppq.apple.com HTTP/1.1 301 Moved Permanently Server: Apple Date: Mon, 16 Mar 2026 12:11:11 GMT Content-Type: text/html Content-Length: 162 Connection: keep-alive Location: https://ppq-ext.v.aaplimg.com/ $ curl https://ppq-ext.v.aaplimg.com/ curl: (60) SSL: no alternative certificate subject name matches target host name 'ppq-ext.v.aaplimg.com' More details here: https://curl.se/docs/sslcerts.html curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above.
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Static library links on device but fails on iOS Simulator
I’m working on an iOS workspace with: a static library project: M800SDK a test app project: TestAppObj I was able to build M800SDK for iOS Simulator on Apple Silicon as a simulator static library, and I also verified the architectures in the produced .a file. However, when I link the app target against that simulator build and try to build TestAppObj for iOS Simulator, I get the following linker errors: Undefined symbols for architecture arm64: _OBJC_CLASS_$_TokenMngr clang++: error: linker command failed with exit code 1 Additional context: The library links and works correctly when building the app for a physical iPhone. And the public header TokenMngr.h is found correctly by the app target. The app target is compiled as Objective-C++ where needed. The library is linked in the app target under “Link Binary With Libraries”. Could you help me understand: Is it possible to run on iOS Simulator ? the recommended way to package and consume this library for iOS Simulator on Apple Silicon? Also I am aware
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95
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Reply to Recording a Packet Trace
Thank you for the detailed instructions, I still cannot get it to work though. My Mac is running macOS 15.7.4 and my iPhone is on iOS 26.3.1, but step 9 invariably fails. I even tried messing with the system firewall settings, allowing all incoming connections to mitmproxy and disabling the firewall altogether, but still no luck.
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Reply to Nearby Interaction property supportsDirectionMeasurement returns false and NINearbyObject direction property is nil
I'm having the same problem. iPhone 14 Pro, IOS26.2. I’d appreciate it if you could share it when you solve the problem.
Topic: App & System Services SubTopic: General Tags:
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Reply to 45 days of "Waiting for Review"... What to do now?
Any advice or if Apple sees this... what do I do?! It seems to me that your only option is to sit and wait quietly instead of flooding them with phone calls, which probably only fuels delay.
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Instruments Malfunction
I’m reporting a severe reproducible issue in Instruments, specifically when using the SwiftUI instrument and opening Show Cause & Effect Graph. What happens: • Instruments becomes extremely laggy/unresponsive • The graph/detail area can turn solid magenta/pink • Memory usage rapidly increases (I observed around 18 GB, 25 GB, and up to 34 GB) • My Mac has crashed/restarted during this, or in other terms, had a kernel panic, where my Mac froze, and everything unresponsive. The Trackpad wouldn't even click. Important detail: • I could not find a generated kernel panic log after the crash/restart. Repro context: • SwiftUI iOS app profiled from Xcode • Trigger is specifically entering Show Cause & Effect Graph • Recordings can be short and still trigger it • Issue is much less severe or absent if I avoid that view What I already tried: • Rebooting • Short captures / fewer instruments • Clearing Xcode/Instruments caches/preferences • Retesting after cleanup • Reinstalling Xcode Is this a known Instruments r
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