Hi all-
I'm trying to build Swift 5.8.1 for CentOS-Stream 10 as the base version that will allow me to eventually get to 6.x. Because all Fedora-related software (Fedora being upstream of CentOS-Stream) requires the software to be built from source on Fedora/Red Hat servers, I can't just use an existing RPM file and use that; it must be buildable from source.
Okay, that said, I am able to build 5.8.1 on CentOS-Stream 10 on x86-64 platforms. For ARM/aarch64, however, the swift-frontend binary crashes when invoked, even without any arguments (e.g. /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend).
The stack trace I get is:
swift-frontend: /root/rpmbuild/BUILD/swift-source/llvm-project/llvm/include/llvm/ADT/DenseMap.h:410: void llvm::DenseMapBase<llvm::DenseMap<swift::irgen::LinkEntity, llvm::Function *>, swift::irgen::LinkEntity, llvm::Function *, llvm::DenseMapInfo<swift::irgen::LinkEntity>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function *>>::moveFromOldBuckets(BucketT *, BucketT *) [DerivedT = llvm::DenseMap<swift::irgen::LinkEntity, llvm::Function *>, KeyT = swift::irgen::LinkEntity, ValueT = llvm::Function *, KeyInfoT = llvm::DenseMapInfo<swift::irgen::LinkEntity>, BucketT = llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function *>]: Assertion `!FoundVal && "Key already in new map?"' failed.
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0. Program arguments: /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend -frontend -c /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/StdlibUnittest.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/CheckStrideable.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/InspectValue.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/LifetimeTracked.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/MinimalTypes.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/OpaqueIdentityFunctions.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/RaceTest.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/Statistics.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/StdlibCoreExtras.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/StringConvertible.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/StringTestHelpers.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/TestHelpers.swift /root/rpmbuild/BUILD/swift-source/swift/stdlib/private/StdlibUnittest/TypeIndexed.swift -supplementary-output-file-map /tmp/supplementaryOutputs-c83b60 -target aarch64-unknown-linux-gnu -Xllvm -aarch64-use-tbi -disable-objc-interop -sdk / -I /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/./lib/swift/linux -warn-implicit-overrides -enable-library-evolution -module-cache-path /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/./module-cache -module-link-name swiftStdlibUnittest -resource-dir /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/./lib/swift -swift-version 5 -tools-directory /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/llvm-linux-aarch64/./bin -O -library-level api -D SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY -D SWIFT_ENABLE_EXPERIMENTAL_DISTRIBUTED -D SWIFT_ENABLE_EXPERIMENTAL_DIFFERENTIABLE_PROGRAMMING -D SWIFT_ENABLE_EXPERIMENTAL_STRING_PROCESSING -D SWIFT_RUNTIME_OS_VERSIONING -D SWIFT_STDLIB_ENABLE_UNICODE_DATA -D SWIFT_STDLIB_ENABLE_VECTOR_TYPES -D SWIFT_STDLIB_HAS_COMMANDLINE -D SWIFT_STDLIB_HAS_STDIN -D SWIFT_STDLIB_HAS_ENVIRON -D SWIFT_THREADING_LINUX -D SWIFT_ENABLE_REFLECTION -D SWIFT_ENABLE_REFLECTION -require-explicit-availability=ignore -enforce-exclusivity=unchecked -disable-autolinking-runtime-compatibility-concurrency -disable-objc-interop -disable-objc-attr-requires-foundation-module -enable-ossa-modules -enable-lexical-lifetimes=false -disable-implicit-concurrency-module-import -disable-implicit-string-processing-module-import -disable-implicit-string-processing-module-import -prespecialize-generic-metadata -define-availability "SwiftStdlib 9999:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999" -define-availability "SwiftStdlib 5.0:macOS 10.14.4, iOS 12.2, watchOS 5.2, tvOS 12.2" -define-availability "SwiftStdlib 5.1:macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0" -define-availability "SwiftStdlib 5.2:macOS 10.15.4, iOS 13.4, watchOS 6.2, tvOS 13.4" -define-availability "SwiftStdlib 5.3:macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0" -define-availability "SwiftStdlib 5.4:macOS 11.3, iOS 14.5, watchOS 7.4, tvOS 14.5" -define-availability "SwiftStdlib 5.5:macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0" -define-availability "SwiftStdlib 5.6:macOS 12.3, iOS 15.4, watchOS 8.5, tvOS 15.4" -define-availability "SwiftStdlib 5.7:macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0" -define-availability "SwiftStdlib 5.8:macOS 13.3, iOS 16.4, watchOS 9.4, tvOS 16.4" -define-availability "SwiftStdlib 5.9:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999" -target-min-inlining-version min -Xcc -DSWIFT_STDLIB_HAS_ENVIRON -parse-as-library -module-name StdlibUnittest -o /root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/stdlib/private/StdlibUnittest//LINUX/aarch64/StdlibUnittest.o -runtime-compatibility-version none -disable-autolinking-runtime-compatibility-dynamic-replacements
1. Swift version 5.8.1 (swift-5.8.1-RELEASE)
2. Compiling with the current language version
3. While evaluating request IRGenRequest(IR Generation for module StdlibUnittest)
4. While emitting prespecialized metadata for type 'Optional<Int>'
#0 0x0000000005d3aeb0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x5d3aeb0)
#1 0x0000000005d38ef4 llvm::sys::RunSignalHandlers() (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x5d38ef4)
#2 0x0000000005d3b2d8 SignalHandler(int) Signals.cpp:0:0
#3 0x0000ffff873087a0 (linux-vdso.so.1+0x7a0)
#4 0x0000ffff866cbe40 __pthread_kill_implementation (/lib64/libc.so.6+0x8be40)
#5 0x0000ffff8667a900 gsignal (/lib64/libc.so.6+0x3a900)
#6 0x0000ffff86665988 abort (/lib64/libc.so.6+0x25988)
#7 0x0000ffff866738a0 __assert_fail_base (/lib64/libc.so.6+0x338a0)
#8 0x0000ffff86673914 (/lib64/libc.so.6+0x33914)
#9 0x0000000000a00c50 llvm::DenseMapBase<llvm::DenseMap<swift::irgen::LinkEntity, llvm::Function*, llvm::DenseMapInfo<swift::irgen::LinkEntity, void>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>>, swift::irgen::LinkEntity, llvm::Function*, llvm::DenseMapInfo<swift::irgen::LinkEntity, void>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>>::moveFromOldBuckets(llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>*, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>*) crtstuff.c:0:0
#10 0x0000000000a00ae0 llvm::DenseMap<swift::irgen::LinkEntity, llvm::Function*, llvm::DenseMapInfo<swift::irgen::LinkEntity, void>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>>::grow(unsigned int) crtstuff.c:0:0
#11 0x0000000000a00a2c llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>* llvm::DenseMapBase<llvm::DenseMap<swift::irgen::LinkEntity, llvm::Function*, llvm::DenseMapInfo<swift::irgen::LinkEntity, void>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>>, swift::irgen::LinkEntity, llvm::Function*, llvm::DenseMapInfo<swift::irgen::LinkEntity, void>, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>>::InsertIntoBucketImpl<swift::irgen::LinkEntity>(swift::irgen::LinkEntity const&, swift::irgen::LinkEntity const&, llvm::detail::DenseMapPair<swift::irgen::LinkEntity, llvm::Function*>*) crtstuff.c:0:0
#12 0x00000000009f85f4 swift::irgen::IRGenModule::getAddrOfValueWitness(swift::CanType, swift::irgen::ValueWitness, swift::ForDefinition_t) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x9f85f4)
#13 0x0000000000ada2a8 addValueWitness(swift::irgen::IRGenModule&, swift::irgen::ConstantStructBuilder&, swift::irgen::ValueWitness, swift::irgen::FixedPacking, swift::CanType, swift::SILType, swift::irgen::TypeInfo const&, llvm::Optional<(anonymous namespace)::BoundGenericTypeCharacteristics>) GenValueWitness.cpp:0:0
#14 0x0000000000ad9a80 addValueWitnessesForAbstractType(swift::irgen::IRGenModule&, swift::irgen::ConstantStructBuilder&, swift::CanType, bool&) GenValueWitness.cpp:0:0
#15 0x0000000000ad96c4 swift::irgen::emitValueWitnessTable(swift::irgen::IRGenModule&, swift::CanType, bool, bool) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0xad96c4)
#16 0x0000000000a69340 swift::irgen::emitSpecializedGenericEnumMetadata(swift::irgen::IRGenModule&, swift::CanType, swift::EnumDecl&) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0xa69340)
#17 0x00000000009e8c7c swift::irgen::IRGenerator::emitLazyDefinitions() (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x9e8c7c)
#18 0x00000000008d3450 swift::IRGenRequest::evaluate(swift::Evaluator&, swift::IRGenDescriptor) const (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x8d3450)
#19 0x000000000091f09c swift::GeneratedModule swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)9>::callDerived<0ul>(swift::Evaluator&, std::integer_sequence<unsigned long, 0ul>) const crtstuff.c:0:0
#20 0x00000000008e2db4 llvm::Expected<swift::IRGenRequest::OutputType> swift::Evaluator::getResultUncached<swift::IRGenRequest>(swift::IRGenRequest const&) crtstuff.c:0:0
#21 0x00000000008d4354 swift::performIRGeneration(swift::ModuleDecl*, swift::IRGenOptions const&, swift::TBDGenOptions const&, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>>, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::ArrayRef<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>, llvm::GlobalVariable**) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x8d4354)
#22 0x00000000005da96c generateIR(swift::IRGenOptions const&, swift::TBDGenOptions const&, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>>, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, llvm::GlobalVariable*&, llvm::ArrayRef<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>) FrontendTool.cpp:0:0
#23 0x00000000005d6d5c performCompileStepsPostSILGen(swift::CompilerInstance&, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>>, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) FrontendTool.cpp:0:0
#24 0x00000000005d5ec4 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x5d5ec4)
#25 0x00000000005e6c88 withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#26 0x00000000005d84f8 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) FrontendTool.cpp:0:0
#27 0x00000000005d7708 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x5d7708)
#28 0x000000000044ab08 swift::mainEntry(int, char const**) (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x44ab08)
#29 0x0000ffff866660dc __libc_start_call_main (/lib64/libc.so.6+0x260dc)
#30 0x0000ffff866661bc __libc_start_main@GLIBC_2.17 (/lib64/libc.so.6+0x261bc)
#31 0x0000000000449bb0 _start (/root/rpmbuild/BUILD/swift-source/build/buildbot_linux/swift-linux-aarch64/bin/swift-frontend+0x449bb0)
<unknown>:0: error: unable to execute command: Aborted
<unknown>:0: error: compile command failed due to signal 6 (use -v to see invocation)
I got around this problem before when building on aarch64 for Fedora by explicitly using Clang 15, which did not cause the problem. That version of Clang is unavailable in CentOS-Stream 10 as it's basically a brand-new version of the distro without any of the legacy versions to fall back on; Clang 19 is the version I have to work with and thus I guess I really have to figure out the issue.
I'm hoping someone may have an idea what to check for insofar as this is very architecture-specific; the x86-64 problem has never exhibited this behavior and the resulting RPM file works well.
Any help would be appreciated!
Ron