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?