Open
Description
Description
My networking library encounters a compile crash when utilizing integer generic parameters and inline arrays as underlying storage for a value type.
Reproduction
Not sure how to create a minimal reproducer here as there is a lot of context.
If you uncomment the let server = try Server<Router, Socket>(...) (line) in the main.swift file it will crash.
#declareRouter is declared as the following, which declares a type of Router.
@freestanding(declaration, names: named(router))
public macro declareRouter(...)Basically if I try creating a Server with the following Router type it crashes:
Router<
RouterResponderStorage<
CompiledStaticResponderStorage<0, 1, 7, 3, 0>,
DynamicResponderStorage
>,
RouterResponderStorage<
CompiledStaticResponderStorage<0, 0, 1, 0, 0>,
DynamicResponderStorage
>,
StaticErrorResponder, DynamicRouteResponder, RouteResponses.StaticString
>Relevant links:
Stack dump
swift-frontend: /home/build-user/swift/lib/IRGen/IRBuilder.h:193: Address swift::irgen::IRBuilder::CreateStructGEP(Address, unsigned int, Size, const llvm::Twine &): Assertion `isa<llvm::StructType>(address.getElementType()) || isa<llvm::ArrayType>(address.getElementType())' failed.
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0. Program arguments: /home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend -frontend -c -primary-file /home/paradigm/Desktop/GitProjects/destiny/Sources/Run/main.swift -emit-dependencies-path /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/Run.build/main.d -emit-reference-dependencies-path /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/Run.build/main.swiftdeps -serialize-diagnostics-path /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/Run.build/main.dia -target x86_64-unknown-linux-gnu -disable-objc-interop -I /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/Modules -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/ModuleCache -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Destiny -D DestinyDefaults -entry-point-function-name Run_main -load-plugin-executable /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/DestinyMacros-tool#DestinyMacros -load-plugin-executable /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/DestinyUtilityMacros-tool#DestinyUtilityMacros -empty-abi-descriptor -enable-anonymous-context-mangled-names -file-compilation-dir /home/paradigm/Desktop/GitProjects/destiny -Xcc -fmodule-map-file=/home/paradigm/Desktop/GitProjects/destiny/.build/checkouts/swift-syntax/Sources/_SwiftSyntaxCShims/include/module.modulemap -Xcc -I -Xcc /home/paradigm/Desktop/GitProjects/destiny/.build/checkouts/swift-syntax/Sources/_SwiftSyntaxCShims/include -Xcc -fmodule-map-file=/home/paradigm/Desktop/GitProjects/destiny/.build/checkouts/CEpoll/module.modulemap -Xcc -fPIC -Xcc -g -Xcc -fno-omit-frame-pointer -no-auto-bridging-header-chaining -module-name Run -package-name destiny -in-process-plugin-server-path /home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/lib/swift/host/plugins -plugin-path /home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/local/lib/swift/host/plugins -o /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/Run.build/main.swift.o -index-store-path /home/paradigm/Desktop/GitProjects/destiny/.build/x86_64-unknown-linux-gnu/debug/index/store -index-system-modules
1. Swift version 6.2-dev (LLVM be9c1978c3677f1, Swift 749e9ee090b6443)
2. Compiling with effective version 5.10
3. While evaluating request IRGenRequest(IR Generation for file "/home/paradigm/Desktop/GitProjects/destiny/Sources/Run/main.swift")
4. While emitting IR SIL function "@Run_main".
#0 0x0000583251f4d048 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x8bed048)
#1 0x0000583251f4abee llvm::sys::RunSignalHandlers() (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x8beabee)
#2 0x0000583251f4d6e1 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007064e684def0 (/usr/lib/libc.so.6+0x3def0)
#4 0x00007064e68a774c __pthread_kill_implementation /usr/src/debug/glibc/glibc/nptl/pthread_kill.c:44:76
#5 0x00007064e684ddc0 raise /usr/src/debug/glibc/glibc/signal/../sysdeps/posix/raise.c:27:6
#6 0x00007064e683557a abort /usr/src/debug/glibc/glibc/stdlib/abort.c:81:3
#7 0x00007064e68354e3 __assert_perror_fail /usr/src/debug/glibc/glibc/assert/assert-perr.c:31:1
#8 0x000058324a809a9a swift::irgen::IRBuilder::CreateStructGEP(swift::irgen::Address, unsigned int, swift::irgen::Size, llvm::Twine const&) crtstuff.c:0:0
#9 0x000058324a8263b1 swift::irgen::ElementLayout::project(swift::irgen::IRGenFunction&, swift::irgen::Address, std::optional<swift::irgen::NonFixedOffsetsImpl*>, llvm::Twine const&) const (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x14c63b1)
#10 0x000058324a9e00d2 swift::irgen::RecordField<(anonymous namespace)::StructFieldInfo>::projectAddress(swift::irgen::IRGenFunction&, swift::irgen::Address, std::optional<swift::irgen::NonFixedOffsetsImpl*>) const GenStruct.cpp:0:0
#11 0x000058324a9e1431 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#12 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#13 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#14 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#15 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#16 0x000058324aa8106e void llvm::function_ref<void (llvm::ArrayRef<swift::irgen::Address>)>::callback_fn<ArrayTypeInfoBase<swift::irgen::LoadableTypeInfo, swift::irgen::LoadableTypeInfo>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const::'lambda'(llvm::ArrayRef<swift::irgen::Address>)>(long, llvm::ArrayRef<swift::irgen::Address>) crtstuff.c:0:0
#17 0x000058324aa7f48c ArrayTypeInfoBase<swift::irgen::LoadableTypeInfo, swift::irgen::LoadableTypeInfo>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const crtstuff.c:0:0
#18 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#19 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#20 0x000058324a9e1547 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::LoadableStructTypeInfo, swift::irgen::LoadableTypeInfo, (anonymous namespace)::StructFieldInfo, true>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#21 0x000058324a9e52ee swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::FixedStructTypeInfo, swift::irgen::IndirectTypeInfo<(anonymous namespace)::FixedStructTypeInfo, swift::irgen::FixedTypeInfo>, (anonymous namespace)::StructFieldInfo, false>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#22 0x000058324aa7734b void llvm::function_ref<void (swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::irgen::TypeInfo const&)>::callback_fn<swift::irgen::IRGenModule::getOrCreateOutlinedInitializeWithCopyFunction(swift::SILType, swift::irgen::TypeInfo const&, swift::irgen::OutliningMetadataCollector const&)::$_2>(long, swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::irgen::TypeInfo const&) Outlining.cpp:0:0
#23 0x000058324aa77744 void llvm::function_ref<void (swift::irgen::IRGenFunction&)>::callback_fn<swift::irgen::IRGenModule::getOrCreateOutlinedCopyAddrHelperFunction(swift::SILType, swift::irgen::TypeInfo const&, swift::irgen::OutliningMetadataCollector const&, llvm::StringRef, llvm::function_ref<void (swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::irgen::TypeInfo const&)>)::$_5>(long, swift::irgen::IRGenFunction&) Outlining.cpp:0:0
#24 0x000058324a8eb8c4 swift::irgen::IRGenModule::getOrCreateHelperFunction(llvm::StringRef, llvm::Type*, llvm::ArrayRef<llvm::Type*>, llvm::function_ref<void (swift::irgen::IRGenFunction&)>, bool, bool, bool, swift::irgen::IRLinkage*, std::optional<unsigned int>, std::optional<llvm::function_ref<void (llvm::AttributeList&)>>) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x158b8c4)
#25 0x000058324aa733cf swift::irgen::IRGenModule::getOrCreateOutlinedCopyAddrHelperFunction(swift::SILType, swift::irgen::TypeInfo const&, swift::irgen::OutliningMetadataCollector const&, llvm::StringRef, llvm::function_ref<void (swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::irgen::TypeInfo const&)>) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x17133cf)
#26 0x000058324aa72ada swift::irgen::IRGenModule::getOrCreateOutlinedInitializeWithCopyFunction(swift::SILType, swift::irgen::TypeInfo const&, swift::irgen::OutliningMetadataCollector const&) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x1712ada)
#27 0x000058324aa7229f swift::irgen::OutliningMetadataCollector::emitCallToOutlinedCopy(swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::irgen::TypeInfo const&, swift::IsInitialization_t, swift::IsTake_t) const (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x171229f)
#28 0x000058324aa76ce0 void llvm::function_ref<void (swift::irgen::OutliningMetadataCollector&)>::callback_fn<swift::irgen::TypeInfo::callOutlinedCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::IsInitialization_t, swift::IsTake_t) const::$_0>(long, swift::irgen::OutliningMetadataCollector&) Outlining.cpp:0:0
#29 0x000058324aa71ec5 swift::irgen::TypeInfo::withWitnessableMetadataCollector(swift::irgen::IRGenFunction&, swift::SILType, swift::irgen::LayoutIsNeeded_t, swift::irgen::DeinitIsNeeded_t, llvm::function_ref<void (swift::irgen::OutliningMetadataCollector&)>) const (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x1711ec5)
#30 0x000058324aa71fb1 swift::irgen::TypeInfo::callOutlinedCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, swift::IsInitialization_t, swift::IsTake_t) const (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x1711fb1)
#31 0x000058324a9e5148 swift::irgen::RecordTypeInfoImpl<(anonymous namespace)::FixedStructTypeInfo, swift::irgen::IndirectTypeInfo<(anonymous namespace)::FixedStructTypeInfo, swift::irgen::FixedTypeInfo>, (anonymous namespace)::StructFieldInfo, false>::initializeWithCopy(swift::irgen::IRGenFunction&, swift::irgen::Address, swift::irgen::Address, swift::SILType, bool) const GenStruct.cpp:0:0
#32 0x000058324aa4959c (anonymous namespace)::IRGenSILFunction::visitSILBasicBlock(swift::SILBasicBlock*) IRGenSIL.cpp:0:0
#33 0x000058324aa3d130 (anonymous namespace)::IRGenSILFunction::emitSILFunction() IRGenSIL.cpp:0:0
#34 0x000058324aa39c53 swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x16d9c53)
#35 0x000058324a8d2caf swift::irgen::IRGenerator::emitGlobalTopLevel(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>> const&) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x1572caf)
#36 0x000058324a74857e swift::IRGenRequest::evaluate(swift::Evaluator&, swift::IRGenDescriptor) const (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x13e857e)
#37 0x000058324a7be21c swift::GeneratedModule swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)17>::callDerived<0ul>(swift::Evaluator&, std::integer_sequence<unsigned long, 0ul>) const crtstuff.c:0:0
#38 0x000058324a7be179 swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)17>::evaluateRequest(swift::IRGenRequest const&, swift::Evaluator&) crtstuff.c:0:0
#39 0x000058324a752b34 swift::IRGenRequest::OutputType swift::Evaluator::getResultUncached<swift::IRGenRequest, swift::IRGenRequest::OutputType swift::evaluateOrFatal<swift::IRGenRequest>(swift::Evaluator&, swift::IRGenRequest)::'lambda'()>(swift::IRGenRequest const&, swift::IRGenRequest::OutputType swift::evaluateOrFatal<swift::IRGenRequest>(swift::Evaluator&, swift::IRGenRequest)::'lambda'()) crtstuff.c:0:0
#40 0x000058324a74ad58 swift::performIRGeneration(swift::FileUnit*, swift::IRGenOptions const&, swift::TBDGenOptions const&, std::unique_ptr<swift::SILModule, std::default_delete<swift::SILModule>>, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::GlobalVariable**) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0x13ead58)
#41 0x000058324a2b7c96 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
#42 0x000058324a2b35c5 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
#43 0x000058324a2b2092 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0xf52092)
#44 0x000058324a2c3f1a withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) FrontendTool.cpp:0:0
#45 0x000058324a2b511e performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) FrontendTool.cpp:0:0
#46 0x000058324a2b4273 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0xf54273)
#47 0x000058324a02bb2a swift::mainEntry(int, char const**) (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0xccbb2a)
#48 0x00007064e68376b5 __libc_start_call_main /usr/src/debug/glibc/glibc/csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#49 0x00007064e6837769 call_init /usr/src/debug/glibc/glibc/csu/../csu/libc-start.c:128:20
#50 0x00007064e6837769 __libc_start_main /usr/src/debug/glibc/glibc/csu/../csu/libc-start.c:347:5
#51 0x000058324a02ab25 _start (/home/paradigm/.local/share/swiftly/toolchains/main-snapshot-2025-05-14/usr/bin/swift-frontend+0xccab25)
Expected behavior
Successfully compile or show compiler diagnostic.
Environment
Swift
Swift version 6.2-dev (LLVM be9c1978c3677f1, Swift 749e9ee)
Target: x86_64-unknown-linux-gnu
Build config: +assertions
Swiftly
1.0.0
OS
Arch Linux (6.14.6-arch1-1)
IDE
VS Code (1.100.0)
Swift (VS Code Extension)
2.2.0
Additional information
Swift Forum post about its discovery.