Env: macOS 13.6.4, Xcode 15.2, MBP M1 Pro I am building/debugging a fairly simple C++ app which is meant to show some basic .dylib functionality. I received the Xcode project/source/libraries, which compile just fine, but when I attempt to run the "debug" version, it crashes before it gets to main(): Debug Navigator: Thread 1 Queue : com.apple.main-thread (serial) #0 0x0000000192544704 in __pthread_kill () #1 0x00000001049cab84 in pthread_kill () #2 0x0000000192489ae8 in abort () #3 0x00000002210fe948 in __report_load.cold.1 () #4 0x00000002210fe638 in __report_load () #5 0x00000001922401d8 in invocation function for block in dyld4::Loader::findAndRunAllInitializers(dyld4::RuntimeState&) const::$_0::operator()() const () #6 0x0000000192281e94 in invocation function for block in dyld3::MachOAnalyzer::forEachInitializer(Diagnostics&, dyld3::MachOAnalyzer::VMAddrConverter const&, void (unsigned int) block_pointer, void const*) const () #7 0x00000001922751a4 in invocation function for block in dyld3::MachOFile::forEachSection(void (dyld3::MachOFile::SectionInfo const&, bool, bool&) block_pointer) const () #8 0x00000001922202d8 in dyld3::MachOFile::forEachLoadCommand(Diagnostics&, void (load_command const*, bool&) block_pointer) const () #9 0x00000001922741cc in dyld3::MachOFile::forEachSection(void (dyld3::MachOFile::SectionInfo const&, bool, bool&) block_pointer) const () #10 0x0000000192281958 in dyld3::MachOAnalyzer::forEachInitializer(Diagnostics&, dyld3::MachOAnalyzer::VMAddrConverter const&, void (unsigned int) block_pointer, void const*) const () #11 0x000000019223c85c in dyld4::Loader::findAndRunAllInitializers(dyld4::RuntimeState&) const () #12 0x000000019223cc10 in dyld4::Loader::runInitializersBottomUp(dyld4::RuntimeState&, dyld3::Array<dyld4::Loader const*>&) const () #13 0x000000019223cbec in dyld4::Loader::runInitializersBottomUp(dyld4::RuntimeState&, dyld3::Array<dyld4::Loader const*>&) const () #14 0x000000019223cbec in dyld4::Loader::runInitializersBottomUp(dyld4::RuntimeState&, dyld3::Array<dyld4::Loader const*>&) const () #15 0x0000000192240264 in dyld4::Loader::runInitializersBottomUpPlusUpwardLinks(dyld4::RuntimeState&) const::$_1::operator()() const () #16 0x000000019223cd90 in dyld4::Loader::runInitializersBottomUpPlusUpwardLinks(dyld4::RuntimeState&) const () #17 0x0000000192260984 in dyld4::APIs::runAllInitializersForMain() () #18 0x00000001922252d0 in dyld4::prepare(dyld4::APIs&, dyld3::MachOAnalyzer const*) () #19 0x0000000192223e18 in start () Thread 2 Queue : com.apple.CoreAnalytics::Client XPC Send (serial) #0 0x0000000104bd50d4 in _dispatch_introspection_continuation_get_info () #1 0x0000000104bd667c in _dispatch_introspection_queue_item_dequeue_hook () #2 0x0000000104b9fbe0 in _dispatch_lane_serial_drain () #3 0x0000000104ba0d8c in _dispatch_lane_invoke () #4 0x0000000104bb0954 in _dispatch_workloop_worker_thread () #5 0x00000001049cbcc8 in _pthread_wqthread () And in the code window (Thread 1: signal SIGABRT at the line with the arrow): libsystem_kernel.dylib`: 0x1925446fc <+0>: mov x16, #0x148 0x192544700 <+4>: svc #0x80 -> 0x192544704 <+8>: b.lo 0x192544724 ; <+40> 0x192544708 <+12>: pacibsp 0x19254470c <+16>: stp x29, x30, [sp, #-0x10]! 0x192544710 <+20>: mov x29, sp 0x192544714 <+24>: bl 0x19253c8a8 ; cerror_nocancel 0x192544718 <+28>: mov sp, x29 0x19254471c <+32>: ldp x29, x30, [sp], #0x10 0x192544720 <+36>: retab 0x192544724 <+40>: ret I am not that familiar with Xcode debugging - where can I look to find why findAndRunAllInitializers() is failing?

[Not sure if this is the best sub-forum - please move or suggest where I can move to a better forum if needed!] I am supplying some .dylibs (Universal) to a client - they were build on macOS 13 (Ventura), using Xcode 14.2. macOS deployment target was set everywhere to macOS 10.11. The client built their own wrapper app, and are successfully running it everywhere - except on an Intel Mac running macOS 11 (Big Sur). They get the error dialog at startup: "demoapp" cannot be opened because it is from an unidentified developer. However, it does work correctly (no 'unidentified developer' error) in macOS 12 (Monterey) and newer OS versions, both on Intel and ARM. I do not have that old of a Mac to test on. I also explained that macOS 11 is no longer supported by Apple, but they do need to support it for a little while longer. I'm not sure what to suggest or have them check - or is this expected, and if so, why?