If a macOS app has orphaned ObjC references, it is possible to manufacture a segmentation fault on application exit.
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Process: Python macOS Updater [92565]
Path: /Users/USER/*/Python macOS Updater.app/Contents/MacOS/Python macOS Updater
Identifier: org.beeware.updater
Version: 0.0.1 (1)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: org.beeware.updater [392057]
User ID: 501
Date/Time: 2026-08-31 11:46:36.5726 +0800
Launch Time: 2026-08-31 11:46:29.5553 +0800
Hardware Model: Mac17,6
OS Version: macOS 26.5.1 (25F80)
Release Type: User
Crash Reporter Key: 45B01DF5-D63A-A855-FF5B-C3B62304253B
Incident Identifier: 627ED03A-197C-49DD-83D8-0D361C2BCB1C
Sleep/Wake UUID: 95FE6E3C-ACC3-4779-8708-30F8E589FE98
Time Awake Since Boot: 2300000 seconds
Time Since Wake: 15268 seconds
System Integrity Protection: enabled
Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000001cb8
Exception Codes: 0x0000000000000001, 0x0000000000001cb8
Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [92565]
VM Region Info: 0x1cb8 is not in any region. Bytes before following region: 4374930248
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 104c44000-104c48000 [ 16K] r-x/r-x SM=COW /Users/USER/*/Python macOS Updater.app/Contents/MacOS/Python macOS Updater
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 Python 0x106022574 new_threadstate + 32
1 Python 0x106023838 PyGILState_Ensure + 120
2 _ctypes.cpython-314-darwin.so 0x10cd52dd8 closure_fcn + 32
3 libffi.dylib 0x198e4d9f4 ffi_closure_SYSV_inner + 864
4 libffi.dylib 0x198e441e8 ffi_closure_SYSV + 56
5 libobjc.A.dylib 0x1842bfca4 AutoreleasePoolPage::releaseUntil(objc_object**) + 204
6 libobjc.A.dylib 0x1842bc130 objc_autoreleasePoolPop + 244
7 Python macOS Updater 0x104c4562c main + 2924
8 dyld 0x184357e00 start + 6992
Thread 1:
Thread 2:
Thread 3:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x1846dce80 __select + 8
1 CoreFoundation 0x1847f87c8 __CFSocketManager + 708
2 libsystem_pthread.dylib 0x184715c58 _pthread_start + 136
3 libsystem_pthread.dylib 0x184710c1c thread_start + 8
Thread 4:
Thread 5:
Thread 6:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x1846d1c34 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x1846e4574 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x1846da9c0 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x1846d1fc0 mach_msg + 24
4 CoreFoundation 0x1847d30d8 __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x1847d19c4 __CFRunLoopRun + 1188
6 CoreFoundation 0x1848a41c4 _CFRunLoopRunSpecificWithOptions + 532
7 AppKit 0x188d21c7c _NSEventThread + 184
8 libsystem_pthread.dylib 0x184715c58 _pthread_start + 136
9 libsystem_pthread.dylib 0x184710c1c thread_start + 8
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000 x1: 0x0000000000000004 x2: 0x000000016b1ba430 x3: 0x000000011e57a8e0
x4: 0x000000016b1ba610 x5: 0x000000016b1ba5d0 x6: 0x0000000000000000 x7: 0x00000001062894b0
x8: 0x0000000000001cb8 x9: 0x000000016b1ba5d0 x10: 0x000000016b1ba598 x11: 0x0000000000000001
x12: 0x000000016b1ba610 x13: 0x0000000000005fe2 x14: 0x000000000000000c x15: 0x0000000000000018
x16: 0x0000000184710c8c x17: 0x00000001f1ed1868 x18: 0x0000000000000000 x19: 0x000000011e57a8e0
x20: 0x0000000000000000 x21: 0x0000000000000004 x22: 0x0000000000000002 x23: 0x000000011e57a908
x24: 0x0000000000000000 x25: 0x0000000000000008 x26: 0x0000000000000002 x27: 0x0000000a2a3cbad8
x28: 0x0000000000000008 fp: 0x000000016b1ba3d0 lr: 0x0000000106023838
sp: 0x000000016b1ba3b0 pc: 0x0000000106022574 cpsr: 0x40000000
far: 0x0000000000001cb8 esr: 0x92000006 (Data Abort) byte read Translation fault
Binary Images:
0x104c44000 - 0x104c47fff org.beeware.updater (0.0.1) <1fff8d2c-6e72-385b-9e5a-1dd53ed59379> /Users/USER/*/Python macOS Updater.app/Contents/MacOS/Python macOS Updater
0x105d0c000 - 0x1061f3fff org.python.python (3.14.6) <5d4c15e3-6d07-3320-9e76-0ec96616e1a9> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/Python
0x104e00000 - 0x104e07fff _json.cpython-314-darwin.so (*) <7a2baa68-a011-3d78-94ac-6ae5fb10a0eb> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_json.cpython-314-darwin.so
0x104e18000 - 0x104e1bfff grp.cpython-314-darwin.so (*) <11559a24-98aa-3ae4-9abf-63b9653680b2> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/grp.cpython-314-darwin.so
0x104e2c000 - 0x104e2ffff fcntl.cpython-314-darwin.so (*) <02e6936d-fb89-326a-9086-22de48031692> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/fcntl.cpython-314-darwin.so
0x104e40000 - 0x104e43fff binascii.cpython-314-darwin.so (*) <a47f3001-8bbc-372d-9c7b-36befc0fb55f> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/binascii.cpython-314-darwin.so
0x104dd0000 - 0x104dd7fff zlib.cpython-314-darwin.so (*) <5b48209b-01cc-370f-8009-464e2f6bee42> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/zlib.cpython-314-darwin.so
0x104dec000 - 0x104deffff _bz2.cpython-314-darwin.so (*) <8b821bc7-926c-38f0-ab58-2033f9c10d6f> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_bz2.cpython-314-darwin.so
0x104e54000 - 0x104e83fff _lzma.cpython-314-darwin.so (*) <cf5e7292-796c-39ec-83ae-43f613e0c1c6> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_lzma.cpython-314-darwin.so
0x105108000 - 0x105113fff _zstd.cpython-314-darwin.so (*) <cd2dcb2c-f97c-3e26-b7e5-2e5d5dd12ebe> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_zstd.cpython-314-darwin.so
0x10ca54000 - 0x10cc1ffff libzstd.1.5.7.dylib (*) <91a8acea-b552-33bd-aaa8-26d9e837306f> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/libzstd.1.5.7.dylib
0x105c48000 - 0x105c4ffff _struct.cpython-314-darwin.so (*) <60264cd9-81f6-3b7f-95b8-4af4f0d9936c> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_struct.cpython-314-darwin.so
0x105c14000 - 0x105c1ffff math.cpython-314-darwin.so (*) <12f3825d-014f-3f85-84bc-20173b7b4a41> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/math.cpython-314-darwin.so
0x105c94000 - 0x105c9bfff _interpreters.cpython-314-darwin.so (*) <0be2d1cd-16ea-3769-ad15-5aeca6e826d1> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_interpreters.cpython-314-darwin.so
0x105c34000 - 0x105c37fff _heapq.cpython-314-darwin.so (*) <d45ab5f8-0123-337e-a19f-bb2f7ed1c923> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_heapq.cpython-314-darwin.so
0x105c64000 - 0x105c73fff _socket.cpython-314-darwin.so (*) <cd5ac336-0c53-3fb4-a924-99fb9ca27ad0> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_socket.cpython-314-darwin.so
0x105cd4000 - 0x105cd7fff _posixsubprocess.cpython-314-darwin.so (*) <49107df6-1f27-325d-be75-ceef40962657> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_posixsubprocess.cpython-314-darwin.so
0x105cb0000 - 0x105cb7fff select.cpython-314-darwin.so (*) <02e4f09e-4d3c-3814-a188-ce95f4780e25> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/select.cpython-314-darwin.so
0x10c9a8000 - 0x10c9c3fff _ssl.cpython-314-darwin.so (*) <927f78c6-8757-3073-9c73-40f1a74bdb36> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_ssl.cpython-314-darwin.so
0x10ce44000 - 0x10ceeffff libssl.3.dylib (*) <7390f18a-40c7-3b8f-8c10-39646c209d87> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/libssl.3.dylib
0x10d980000 - 0x10dce3fff libcrypto.3.dylib (*) <a440c4db-1b46-3894-a964-0af164d0cb86> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/libcrypto.3.dylib
0x105ce8000 - 0x105cf3fff _asyncio.cpython-314-darwin.so (*) <e5fe4e90-d2d7-3430-be61-87dc1dbf2f32> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_asyncio.cpython-314-darwin.so
0x10c944000 - 0x10c97ffff _decimal.cpython-314-darwin.so (*) <a2b2b9fe-c362-3f98-a34c-cc608afb0b3d> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_decimal.cpython-314-darwin.so
0x10cd48000 - 0x10cd5ffff _ctypes.cpython-314-darwin.so (*) <3a5012ba-ec5d-3ec0-91f5-f6023334b77e> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/_ctypes.cpython-314-darwin.so
0x10ca00000 - 0x10ca07fff libffi-trampolines.dylib (*) <e2b9bc52-75fb-382a-96ee-7bb18180bfd2> /usr/lib/libffi-trampolines.dylib
0x10fd90000 - 0x10fd9bfff libobjc-trampolines.dylib (*) <ca58aa96-b997-3a6d-9132-19d49be4b3e9> /usr/lib/libobjc-trampolines.dylib
0x11b994000 - 0x11c34ffff com.apple.AGXMetalG17X (351.2) <81e8aeac-3aa5-3303-a8d0-b18b74a6d94b> /System/Library/Extensions/AGXMetalG17X.bundle/Contents/MacOS/AGXMetalG17X
0x11b940000 - 0x11b963fff pyexpat.cpython-314-darwin.so (*) <3ba59d69-e07e-329a-a814-77abb4891214> /Users/USER/*/Python macOS Updater.app/Contents/Frameworks/Python.framework/Versions/3.14/lib/python3.14/lib-dynload/pyexpat.cpython-314-darwin.so
0x198e3c000 - 0x198e4e227 libffi.dylib (*) <ed35de10-ac5d-3468-9986-10c0c12b0562> /usr/lib/libffi.dylib
0x1842b0000 - 0x184302b4b libobjc.A.dylib (*) <ff1d8ae4-abef-35f1-a30a-1183b9cb414f> /usr/lib/libobjc.A.dylib
0x184338000 - 0x1843de217 dyld (*) <a237ef81-b68b-37ba-a165-92c965529534> /usr/lib/dyld
0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
0x18470f000 - 0x18471bb3b libsystem_pthread.dylib (*) <4f33683c-18c8-39a1-800b-2e3bd43bcc13> /usr/lib/system/libsystem_pthread.dylib
0x1846d1000 - 0x18470e2af libsystem_kernel.dylib (*) <cc1cf985-bc65-3725-809f-4c1e36b8f4ba> /usr/lib/system/libsystem_kernel.dylib
0x184755000 - 0x184cb331f com.apple.CoreFoundation (6.9) <04e3598b-f226-3250-b3b2-ce938dd4db7e> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x188bc7000 - 0x18a2e9f9f com.apple.AppKit (6.9) <cf57a4fc-4be3-3d95-b543-d744e8718b26> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 42
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=1.8G resident=0K(0%) swapped_out_or_unallocated=1.8G(100%)
Writable regions: Total=213.9M written=625K(0%) resident=625K(0%) swapped_out=0K(0%) unallocated=213.3M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Accelerate framework 128K 1
Activity Tracing 256K 1
AttributeGraph Data 1024K 1
CG image 16K 1
ColorSync 16K 1
CoreAnimation 1536K 33
CoreGraphics 64K 4
CoreUI image data 720K 6
Foundation 16K 1
Kernel Alloc Once 32K 1
MALLOC 97.8M 33
MALLOC guard page 3168K 4
Memory Tag 22 64.0M 1
STACK GUARD 56.1M 7
Stack 11.2M 7
VM_ALLOCATE 37.2M 47
__AUTH 5953K 624
__AUTH_CONST 88.6M 1010
__CTF 824 1
__DATA 35.3M 983
__DATA_CONST 35.5M 1041
__DATA_DIRTY 8300K 867
__FONT_DATA 2352 1
__LINKEDIT 579.0M 29
__OBJC_RO 79.1M 1
__OBJC_RW 2599K 1
__TEXT 1.2G 1064
__TPRO_CONST 128K 2
dyld private memory 128K 1
mapped file 277.5M 37
page table in kernel 625K 1
shared memory 1376K 14
=========== ======= =======
TOTAL 2.6G 5826
-----------
Full Report
-----------
{"app_name":"Python macOS Updater","timestamp":"2026-08-31 11:46:39.00 +0800","app_version":"0.0.1","slice_uuid":"1fff8d2c-6e72-385b-9e5a-1dd53ed59379","build_version":"1","platform":1,"bundleID":"org.beeware.updater","share_with_app_devs":1,"is_first_party":0,"bug_type":"309","os_version":"macOS 26.5.1 (25F80)","roots_installed":0,"name":"Python macOS Updater","incident_id":"627ED03A-197C-49DD-83D8-0D361C2BCB1C"}
{
"uptime" : 2300000,
"procRole" : "Foreground",
"version" : 2,
"userID" : 501,
"deployVersion" : 210,
"modelCode" : "Mac17,6",
"coalitionID" : 392057,
"osVersion" : {
"train" : "macOS 26.5.1",
"build" : "25F80",
"releaseType" : "User"
},
"captureTime" : "2026-08-31 11:46:36.5726 +0800",
"codeSigningMonitor" : 2,
"incident" : "627ED03A-197C-49DD-83D8-0D361C2BCB1C",
"pid" : 92565,
"translated" : false,
"cpuType" : "ARM-64",
"procLaunch" : "2026-08-31 11:46:29.5553 +0800",
"procStartAbsTime" : 56329325458130,
"procExitAbsTime" : 56329493831528,
"procName" : "Python macOS Updater",
"procPath" : "\/Users\/USER\/*\/Python macOS Updater.app\/Contents\/MacOS\/Python macOS Updater",
"bundleInfo" : {"CFBundleShortVersionString":"0.0.1","CFBundleVersion":"1","CFBundleIdentifier":"org.beeware.updater"},
"storeInfo" : {"deviceIdentifierForVendor":"3758B7FC-6123-591C-AAA9-CA239706F73D","thirdParty":true},
"parentProc" : "launchd",
"parentPid" : 1,
"coalitionName" : "org.beeware.updater",
"crashReporterKey" : "45B01DF5-D63A-A855-FF5B-C3B62304253B",
"appleIntelligenceStatus" : {"reasons":["notOptedIn","assetIsNotReady"],"state":"unavailable"},
"developerMode" : 1,
"codeSigningID" : "org.beeware.updater",
"codeSigningTeamID" : "",
"codeSigningFlags" : 570425857,
"codeSigningValidationCategory" : 10,
"codeSigningTrustLevel" : 4294967295,
"codeSigningAuxiliaryInfo" : 0,
"instructionByteStream" : {"beforePC":"KOEtOdj\/\/xf2V72p9E8Bqf17Aqn9gwCR9QMBqvQDAKoIl4NSCAAIiw==","atPC":"E4H\/+PMBALVIEwCwCAE4kQkJQPkAAUD5IQCAUgJ1gFIgAT\/W8wMAqg=="},
"bootSessionUUID" : "9400413A-A85F-4E2B-9C95-4BE0E827639C",
"wakeTime" : 15268,
"sleepWakeUUID" : "95FE6E3C-ACC3-4779-8708-30F8E589FE98",
"sip" : "enabled",
"vmRegionInfo" : "0x1cb8 is not in any region. Bytes before following region: 4374930248\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 104c44000-104c48000 [ 16K] r-x\/r-x SM=COW \/Users\/USER\/*\/Python macOS Updater.app\/Contents\/MacOS\/Python macOS Updater",
"exception" : {"codes":"0x0000000000000001, 0x0000000000001cb8","rawCodes":[1,7352],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x0000000000001cb8"},
"termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"exc handler","byPid":92565},
"vmregioninfo" : "0x1cb8 is not in any region. Bytes before following region: 4374930248\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 104c44000-104c48000 [ 16K] r-x\/r-x SM=COW \/Users\/USER\/*\/Python macOS Updater.app\/Contents\/MacOS\/Python macOS Updater",
"extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":42},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0},
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"base" : 6511804416,
"size" : 5990596608,
"uuid" : "ff7119a7-f64d-305d-8135-7e6eb1c207d1"
},
"vmSummary" : "ReadOnly portion of Libraries: Total=1.8G resident=0K(0%) swapped_out_or_unallocated=1.8G(100%)\nWritable regions: Total=213.9M written=625K(0%) resident=625K(0%) swapped_out=0K(0%) unallocated=213.3M(100%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nAccelerate framework 128K 1 \nActivity Tracing 256K 1 \nAttributeGraph Data 1024K 1 \nCG image 16K 1 \nColorSync 16K 1 \nCoreAnimation 1536K 33 \nCoreGraphics 64K 4 \nCoreUI image data 720K 6 \nFoundation 16K 1 \nKernel Alloc Once 32K 1 \nMALLOC 97.8M 33 \nMALLOC guard page 3168K 4 \nMemory Tag 22 64.0M 1 \nSTACK GUARD 56.1M 7 \nStack 11.2M 7 \nVM_ALLOCATE 37.2M 47 \n__AUTH 5953K 624 \n__AUTH_CONST 88.6M 1010 \n__CTF 824 1 \n__DATA 35.3M 983 \n__DATA_CONST 35.5M 1041 \n__DATA_DIRTY 8300K 867 \n__FONT_DATA 2352 1 \n__LINKEDIT 579.0M 29 \n__OBJC_RO 79.1M 1 \n__OBJC_RW 2599K 1 \n__TEXT 1.2G 1064 \n__TPRO_CONST 128K 2 \ndyld private memory 128K 1 \nmapped file 277.5M 37 \npage table in kernel 625K 1 \nshared memory 1376K 14 \n=========== ======= ======= \nTOTAL 2.6G 5826 \n",
"legacyInfo" : {
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"queue" : "com.apple.main-thread"
}
},
"logWritingSignature" : "3c1aee8af4bbf3ce5e451377ab21bb5dd098aa84",
"roots_installed" : 0,
"bug_type" : "309",
"trmStatus" : 1,
"trialInfo" : {
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"rolloutId" : "67648e5334a82511f4acf879",
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Model: Mac17,6, BootROM 18000.161.9, proc 18:6:0:12 processors, 48 GB, SMC
Graphics: Apple M5 Max, Apple M5 Max, Built-In
Display: DELL P2715Q, 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition), Main, MirrorOff, Online
Display: Color LCD, 3456 x 2234 Retina, MirrorOff, Online
Display: DELL P2715Q, 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition), MirrorOff, Online
Memory Module: LPDDR5, Samsung
AirPort: chip id: 0x11 api 1.2 firmware [Rev 72.129.725 N1B1 devFused=0] phy [20.1.62.0], core80211 [324.129.732 N1_silicon_b ], Apr 18 2026 18:00:58 version XBS_BUILD_TAG GIT_DESCRIBE FWID chip id: 0x11 api 1.2 firmware [Rev 72.129.725 N1B1 devFused=0] phy [20.1.62.0], core80211 [324.129.732 N1_silicon_b ]
IO80211_driverkit-1561.3 "IO80211_driverkit-1561.3" Apr 18 2026 17:42:26
AirPort:
Bluetooth: Version (null), 0 services, 0 devices, 0 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Thunderbolt Bus: MacBook Pro, Apple Inc.
Thunderbolt Bus: MacBook Pro, Apple Inc.
Thunderbolt Bus: MacBook Pro, Apple Inc.
Describe the bug
If a macOS app has orphaned ObjC references, it is possible to manufacture a segmentation fault on application exit.
How to reproduce the bug
Minimum example code
import asyncio import toga class CrashApp(toga.App): def startup(self): self.tree = toga.Tree( columns=["Column A", "Column B"], flex=1, ) # An unused, dangling widget unused_widget = toga.Box() self.main_window = toga.MainWindow(title=self.formal_name, size=(500, 400)) self.main_window.content = self.tree self.main_window.show() async def on_running(self): await asyncio.sleep(0.1) self.exit() # Force a second exit in case the "reopen windows?" dialog appears await asyncio.sleep(0.1) self.exit() def main(): return CrashApp()Screenshots
No response
Environment details
Logs
Additional context
No response