Update: We can profile using the Allocations instrument, but not the Leaks instrument.
My company's app cannot be run under instruments (the leaks instrument, specifically). We have tried:
* Xcode 11
* Xcode 11 beta
* Various simulators
* Debug build
* Release build
* Rebooting the machine
* Trying on various machines
This is under Mojave 10.14.6
No matter what I do, the result is identical. The app works fine if I debug with Xcode, but if I launch with instruments it sticks at the launch screen. When I attach the debugger to the process and pause, I get this backtrace:
Thread 1 Queue : com.apple.main-thread (serial)
#0 0x0000000119b9e88a in syscall_thread_switch ()
#1 0x000000010b5df237 in _OSSpinLockLockYield ()
#2 0x000000010b5c123b in dyld::notifyBatchPartial(dyld_image_states, bool, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), bool, bool) ()
#3 0x000000010b5c9e85 in ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, bool, ImageLoader::RPathChain const&, char const*) ()
#4 0x000000010b5c1c86 in dyld::link(ImageLoader*, bool, bool, ImageLoader::RPathChain const&, unsigned int) ()
#5 0x000000010b5c5f88 in dlopen_internal ()
#6 0x00007fff5198a9ed in dlopen ()
#7 0x00007fff50b1484a in imp_implementationWithBlock ()
#8 0x000000010b6635df in _swapMethods ()
#9 0x000000010b664b13 in _willInitializeClass ()
#10 0x00007fff50b01ea9 in initializeNonMetaClass ()
#11 0x00007fff50b01cc2 in initializeNonMetaClass ()
#12 0x00007fff50b01cc2 in initializeNonMetaClass ()
#13 0x00007fff50b024ba in initializeAndMaybeRelock(objc_class*, objc_object*, mutex_tt&, bool) ()
#14 0x00007fff50b0ca5d in lookUpImpOrForward ()
#15 0x00007fff50afd219 in _objc_msgSend_uncached ()
#16 0x000000010b5c1695 in dyld::notifyBatchPartial(dyld_image_states, bool, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), bool, bool) ()
#17 0x000000010b5ca024 in ImageLoader::link(ImageLoader::LinkContext const&, bool, bool, bool, ImageLoader::RPathChain const&, char const*) ()
#18 0x000000010b5c1c86 in dyld::link(ImageLoader*, bool, bool, ImageLoader::RPathChain const&, unsigned int) ()
#19 0x000000010b5c5f88 in dlopen_internal ()
#20 0x00007fff5198a9ed in dlopen ()
#21 0x00007fff50b1484a in imp_implementationWithBlock ()
#22 0x000000010b6635df in _swapMethods ()
#23 0x000000010b664b13 in _willInitializeClass ()
#24 0x00007fff50b021d4 in _objc_addWillInitializeClassFunc ()
#25 0x000000010b664ae1 in ___enumerateClasses_block_invoke ()
#26 0x00007fff519477b9 in _dispatch_client_callout ()
#27 0x00007fff519489e5 in _dispatch_once_callout ()
#28 0x000000010b663216 in _enumerateClasses ()
#29 0x000000010b662f4c in ___AllocationsSetup_block_invoke_2 ()
#30 0x00007fff519477b9 in _dispatch_client_callout ()
#31 0x00007fff519489e5 in _dispatch_once_callout ()
#32 0x000000010b662ec1 in ___AllocationsSetup_block_invoke ()
#33 0x000000010b661d70 in _AllocationsSetup ()
#34 0x000000010b6618dc in __OAInit ()
#35 0x000000010b5d03a7 in ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) ()
#36 0x000000010b5d07b8 in ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) ()
#37 0x000000010b5cb9a2 in ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) ()
#38 0x000000010b5ca7a6 in ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) ()
#39 0x000000010b5ca846 in ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) ()
#40 0x000000010b5bf046 in dyld::initializeMainExecutable() ()
#41 0x000000010b5c30fc in dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) ()
#42 0x000000010b5be1cd in start_sim ()
#43 0x0000000119b62234 in dyld::useSimulatorDyld(int, macho_header const*, char const*, int, char const**, char const**, char const**, unsigned long*, unsigned long*) ()
#44 0x0000000119b600ce in dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) ()
#45 0x0000000119b5b503 in dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) ()
#46 0x0000000119b5b036 in _dyld_start ()Has anybody seen anything like this?