Using the 0 byte file inspection trick to track down the file with the issue, I think I was able to work around the issue.

SDK 17.x - https://github.com/urbanairship/ios-library/commit/28fa3a1965bd0f8ba1a8ae6cf5abf6f87fd5b7a5 branch xcode-15

SDK 16.x - https://github.com/urbanairship/ios-library/commit/c4babdf4099a326b73ca80e8e7229a75ea2b63ca branch xcode-15-SDK16

Could someone in this thread try pointing the SPM package to one of those branches to see if the issue is resolved for you? Once I get confirmation Ill work on releasing a patch.

Tried compiling an app w/ this library (added w/ CocoaPods) in beta 2 and getting the same errors. Changing optimization settings didn’t seem to do anything

Changing optimization level doesn’t seem to work when brought in via SwiftPM

Fixed in both 17.0.3 and 16.12.3

still the same with Beta 3

here is the stack trace

... multiple other files
/Users/myUser/Developer/iOS/myApp/Pods/Airship/Airship/AirshipCore/Source/Worker.swift
/Users/myUser/Developer/iOS/myApp/Pods/Airship/Airship/AirshipCore/Source/WorkRateLimiterActor.swift
---
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x0000000105bf8a4c llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x0000000105bf7f08 llvm::sys::RunSignalHandlers() + 112
2  swift-frontend           0x000000010446b494 SignalHandler(int) + 352
3  libsystem_platform.dylib 0x00000001ab7caa24 _sigtramp + 56
4  libsystem_pthread.dylib  0x00000001ab79bc28 pthread_kill + 288
5  libsystem_c.dylib        0x00000001ab6a9ae8 abort + 180
6  swift-frontend           0x00000001085d85e4 llvm::itanium_demangle::Node* llvm::itanium_demangle::AbstractManglingParser<llvm::itanium_demangle::ManglingParser<(anonymous namespace)::CanonicalizerAllocator>, (anonymous namespace)::CanonicalizerAllocator>::make<llvm::itanium_demangle::EnableIfAttr, llvm::itanium_demangle::NodeArray>(llvm::itanium_demangle::NodeArray&&) + 0
7  swift-frontend           0x0000000105b7b2ec llvm::report_fatal_error(llvm::Twine const&, bool) + 280
8  swift-frontend           0x00000001085b7340 bool llvm::DenseMapBase<llvm::DenseMap<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, llvm::GlobalValue*, llvm::DenseMapInfo<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, void>, llvm::detail::DenseMapPair<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, llvm::GlobalValue*>>, std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, llvm::GlobalValue*, llvm::DenseMapInfo<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, void>, llvm::detail::DenseMapPair<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, llvm::GlobalValue*>>::LookupBucketFor<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>>(std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits> const&, llvm::detail::DenseMapPair<std::__1::pair<clang::CXXRecordDecl const*, clang::CharUnits>, llvm::GlobalValue*> const*&) const + 0
9  swift-frontend           0x00000001040a0eec clang::RecursiveASTVisitor<clang::ParentMapContext::ParentMap::ASTVisitor>::TraverseFixedPointLiteral(clang::FixedPointLiteral*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) + 0
10 swift-frontend           0x00000001083a3f48 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) + 224
11 swift-frontend           0x00000001074f6b30 swift::performLLVMOptimizations(swift::IRGenOptions const&, llvm::Module*, llvm::TargetMachine*, llvm::raw_pwrite_stream*) + 4252
12 swift-frontend           0x00000001074f9e38 swift::performLLVM(swift::IRGenOptions const&, swift::DiagnosticEngine&, llvm::sys::SmartMutex<false>*, llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*, llvm::StringRef, swift::UnifiedStatsReporter*) + 2736
13 swift-frontend           0x00000001085e3758 generateCode(swift::CompilerInstance&, llvm::StringRef, llvm::Module*, llvm::GlobalVariable*) + 252
14 swift-frontend           0x00000001085ed0ac performCompileStepsPostSILGen(swift::CompilerInstance&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>>, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) + 1708
15 swift-frontend           0x00000001085e8234 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 1748
16 swift-frontend           0x00000001085ebba0 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 4216
17 swift-frontend           0x0000000107f47830 swift::mainEntry(int, char const**) + 4112
18 dyld                     0x00000001ab443f28 start + 2236
Command SwiftCompile failed with a nonzero exit code