[SR-4286] [Blocker] unhandled param context #46869

dabrahams · 2017-03-19T02:09:53Z


Previous ID	SR-4286
Radar	None
Original Reporter	@dabrahams
Type	Bug
Status	Closed
Resolution	Done

Additional Detail from JIRA


Votes	0
Component/s	Compiler
Labels	Bug, CompilerCrash
Assignee	@dabrahams
Priority	Medium

md5: 74775e111704e9fe2799b4a67cdd9479

Issue Description:

$ git fetch https://github.com/dabrahams/swift refs/bugs/unhandled-param-context:BUG && git checkout BUG

/Users/Shared/dabrahams/s/swift/utils/build-script --distcc --skip-build-ios-device --skip-build-tvos-device --debug-swift-stdlib --skip-build-benchmarks --release --swift-stdlib-assertions --swift-stdlib-build-type=Debug --

+ mkdir -p /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert
+ env HOST_VARIABLE_macosx_x86_64__SWIFT_BENCHMARK_TARGETS=swift-benchmark-macosx-x86_64 HOST_VARIABLE_macosx_x86_64__SWIFT_RUN_BENCHMARK_TARGETS=check-swift-benchmark-macosx-x86_64 'HOST_VARIABLE_macosx_x86_64__SWIFT_SDKS=IOS IOS_SIMULATOR OSX TVOS TVOS_SIMULATOR WATCHOS WATCHOS_SIMULATOR' HOST_VARIABLE_macosx_x86_64__SWIFT_STDLIB_TARGETS=swift-test-stdlib-macosx-x86_64 HOST_VARIABLE_macosx_x86_64__SWIFT_TEST_TARGETS= caffeinate /Users/Shared/dabrahams/s/swift/utils/build-script-impl --workspace /Users/Shared/dabrahams/s --build-dir /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert --install-prefix /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr --host-target macosx-x86_64 --stdlib-deployment-targets 'macosx-x86_64 iphonesimulator-i386 iphonesimulator-x86_64 appletvsimulator-x86_64 watchsimulator-i386 iphoneos-armv7 iphoneos-armv7s iphoneos-arm64 appletvos-arm64 watchos-armv7k' --host-cc /Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang --host-cxx /Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ --darwin-xcrun-toolchain default --darwin-deployment-version-osx=10.9 --darwin-deployment-version-ios=7.0 --darwin-deployment-version-tvos=9.0 --darwin-deployment-version-watchos=2.0 --cmake /Users/dave/brew/bin/cmake --cmark-build-type Release --llvm-build-type Release --swift-build-type Release --swift-stdlib-build-type Debug --lldb-build-type Release --foundation-build-type Release --libdispatch-build-type Release --libicu-build-type Release --xctest-build-type Release --swiftpm-build-type Release --swift-enable-assertions true --swift-stdlib-enable-assertions true --swift-analyze-code-coverage false --cmake-generator Ninja --build-jobs 8 '--common-cmake-options=-G Ninja -DCMAKE_C_COMPILER:PATH=/Users/dave/brew/bin/distcc -DCMAKE_C_COMPILER_ARG1=/Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -DCMAKE_CXX_COMPILER:PATH=/Users/dave/brew/bin/distcc -DCMAKE_CXX_COMPILER_ARG1=/Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -DCMAKE_MAKE_PROGRAM=/Users/dave/brew/bin/ninja' --build-args=-j20 --cmark-cmake-options= '--llvm-cmake-options=-DLLVM_ENABLE_ASSERTIONS=TRUE -DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64;PowerPC;SystemZ' '--swift-cmake-options=-DSWIFT_STDLIB_ENABLE_SIL_OWNERSHIP=FALSE -DCMAKE_EXPORT_COMPILE_COMMANDS=TRUE -DSWIFT_FORCE_OPTIMIZED_TYPECHECKER=FALSE' --build-stdlib-deployment-targets all --ninja-bin=/Users/dave/brew/bin/ninja --distcc --distcc-pump=/Users/dave/brew/bin/pump --skip-build-benchmarks --skip-build-foundation --skip-build-xctest --skip-build-lldb --skip-build-llbuild --skip-build-libdispatch --skip-build-libicu --skip-build-swiftpm --skip-build-playgroundlogger --skip-build-playgroundsupport --build-swift-dynamic-stdlib --build-swift-dynamic-sdk-overlay --skip-build-ios-device --skip-build-ios-simulator --skip-build-tvos-device --skip-build-tvos-simulator --skip-build-watchos-device --skip-build-watchos-simulator --skip-build-android --skip-test-swift --skip-test-cmark --skip-test-lldb --skip-test-llbuild --skip-test-swiftpm --skip-test-xctest --skip-test-foundation --skip-test-libdispatch --skip-test-libicu --skip-test-playgroundlogger --skip-test-playgroundsupport --skip-test-linux --skip-test-freebsd --skip-test-cygwin --skip-test-osx --skip-test-ios-host --skip-test-ios-simulator --skip-test-tvos-host --skip-test-tvos-simulator --skip-test-watchos-host --skip-test-watchos-simulator --skip-test-android-host --skip-test-benchmarks --skip-test-optimized --android-deploy-device-path /data/local/tmp --toolchain-prefix /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain --host-lipo /Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/lipo --host-libtool /Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool --swift-stdlib-build-type=Debug --llvm-lit-args=-sv
Building the standard library for: swift-test-stdlib-macosx-x86_64
cmark: using standard linker
+ /Users/dave/brew/bin/pump /Users/dave/brew/bin/cmake --build /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/cmark-macosx-x86_64 -- -j20 all
__________Using distcc-pump from /Users/dave/brew/bin/../Cellar/distcc-swift/r796/bin
__________Using        2 distcc servers in pump mode
ninja: no work to do.
__________Shutting down distcc-pump include server
llvm: using standard linker
symlinking the system headers (/Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../../usr/include/c++) into the local clang build directory (/Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/llvm-macosx-x86_64/include).
+ ln -s -f /Applications/Xcode-8W109m.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../../usr/include/c++ /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/llvm-macosx-x86_64/include
+ /Users/dave/brew/bin/pump /Users/dave/brew/bin/cmake --build /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/llvm-macosx-x86_64 -- -j20 all
__________Using distcc-pump from /Users/dave/brew/bin/../Cellar/distcc-swift/r796/bin
__________Using        2 distcc servers in pump mode
ninja: no work to do.
__________Shutting down distcc-pump include server
swift: using standard linker
+ /Users/dave/brew/bin/pump /Users/dave/brew/bin/cmake --build /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64 -- -j20 all swift-test-stdlib-macosx-x86_64
__________Using distcc-pump from /Users/dave/brew/bin/../Cellar/distcc-swift/r796/bin
__________Using        2 distcc servers in pump mode
[1/165] Generating UnsafeBufferPointer.swift from UnsafeBufferPointer.swift.gyb with ptr size = 8
[2/165] Generating /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule
FAILED: lib/swift/macosx/x86_64/Swift.swiftmodule lib/swift/macosx/x86_64/Swift.swiftdoc 
cd /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/stdlib/public/core && /Users/dave/brew/Cellar/cmake/3.7.2/bin/cmake -E remove -f /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule && /usr/bin/python /Users/Shared/dabrahams/s/swift/utils/line-directive @/Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/stdlib/public/core/VEZn4.txt -- /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./bin/swiftc -emit-module -o /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule -sdk /Applications/Xcode-8W109m.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk -target x86_64-apple-macosx10.9 -resource-dir /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift -F /Applications/Xcode-8W109m.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/../../../Developer/Library/Frameworks -Onone -g -D INTERNAL_CHECKS_ENABLED -I /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64 -module-cache-path /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./module-cache -no-link-objc-runtime -nostdimport -parse-stdlib -module-name Swift -Xfrontend -group-info-path -Xfrontend /Users/Shared/dabrahams/s/swift/stdlib/public/core/GroupInfo.json -Xfrontend -sil-serialize-all -module-link-name swiftCore -force-single-frontend-invocation -Xcc -D__SWIFT_CURRENT_DYLIB=swiftCore -parse-as-library @/Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/stdlib/public/core/VEZn4.txt
/Users/Shared/dabrahams/s/swift/stdlib/public/core/SequenceWrapper.swift:23:29: warning: redundant conformance constraint 'Self.Iterator': 'IteratorProtocol'
  associatedtype Iterator : IteratorProtocol = Base.Iterator
                            ^
/Users/Shared/dabrahams/s/swift/stdlib/public/core/SequenceWrapper.swift:21:29: note: conformance constraint 'Self.Iterator': 'IteratorProtocol' implied here
protocol _SequenceWrapper : Sequence {
                            ^
/Users/Shared/dabrahams/s/swift/stdlib/public/core/AnyUnicode.swift:221:30: warning: redundant conformance constraint 'Self.CodeUnits.Iterator.Element': 'UnsignedInteger'
  CodeUnits.Iterator.Element : UnsignedInteger,
                             ^
/Users/Shared/dabrahams/s/swift/stdlib/public/core/AnyUnicode.swift:222:30: note: conformance constraint 'Self.CodeUnits.Iterator.Element': 'UnsignedInteger' implied here
  CodeUnits.Iterator.Element == UTF16.CodeUnit,
                             ^
/Users/Shared/dabrahams/s/swift/stdlib/public/core/AnyUnicode.swift:169:25: warning: redundant conformance constraint 'Self.CodeUnits.SubSequence': 'Collection'
  CodeUnits.SubSequence : Collection, 
                        ^
unhandled param context
UNREACHABLE executed at /Users/Shared/dabrahams/s/swift/lib/AST/ASTMangler.cpp:374!
0  swift                    0x0000000104aecd48 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1  swift                    0x0000000104aed3f6 SignalHandler(int) + 454
2  libsystem_platform.dylib 0x00007fffa9191bba _sigtramp + 26
3  swift                    0x0000000104be2d47 clang::StringLiteral::outputString(llvm::raw_ostream&) const::Hex + 538551
4  libsystem_c.dylib        0x00007fffa9018420 abort + 129
5  swift                    0x0000000104a8a587 llvm::llvm_unreachable_internal(char const*, char const*, unsigned int) + 471
6  swift                    0x00000001026e07c0 swift::NewMangling::ASTMangler::mangleAccessorEntityAsUSR(swift::AccessorKind, swift::AddressorKind, swift::ValueDecl const*, llvm::StringRef) + 0
7  swift                    0x00000001026dc7bc swift::NewMangling::ASTMangler::appendEntity(swift::ValueDecl const*, llvm::StringRef, bool) + 76
8  swift                    0x00000001026e0029 swift::NewMangling::ASTMangler::mangleDeclAsUSR(swift::ValueDecl*, llvm::StringRef) + 377
9  swift                    0x00000001027d2b5e swift::ide::printDeclUSR(swift::ValueDecl const*, llvm::raw_ostream&) + 1310
10 swift                    0x00000001023ded33 writeDeclCommentTable(llvm::BCRecordLayout<1u, llvm::BCVBR<16u>, llvm::BCBlob> const&, swift::SourceFile const*, swift::ModuleDecl const*, DeclGroupNameContext&)::DeclCommentTableWriter::walkToDeclPre(swift::Decl*) + 499
11 swift                    0x0000000102715d7c (anonymous namespace)::Traversal::doIt(swift::Decl*) + 204
12 swift                    0x00000001027197ff (anonymous namespace)::Traversal::visitParameterList(swift::ParameterList*) + 95
13 swift                    0x00000001027163c3 (anonymous namespace)::Traversal::doIt(swift::Decl*) + 1811
14 swift                    0x000000010271602e (anonymous namespace)::Traversal::doIt(swift::Decl*) + 894
15 swift                    0x0000000102715c9b swift::Decl::walk(swift::ASTWalker&) + 27
16 swift                    0x000000010279323a swift::SourceFile::walk(swift::ASTWalker&) + 170
17 swift                    0x00000001023d7c59 swift::serialization::Serializer::writeDocToStream(llvm::raw_ostream&, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, llvm::StringRef, swift::ASTContext&) + 793
18 swift                    0x00000001024068cc void llvm::function_ref<void (llvm::raw_ostream&)>::callback_fn<swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*)::$_6>(long, llvm::raw_ostream&) + 204
19 swift                    0x00000001023d8a7b withOutputFile(swift::ASTContext&, llvm::StringRef, llvm::function_ref<void (llvm::raw_ostream&)>) + 395
20 swift                    0x00000001023d88c0 swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*) + 304
21 swift                    0x00000001017fe393 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 14627
22 swift                    0x00000001017b92e0 main + 3312
23 libdyld.dylib            0x00007fffa8f84255 start + 1
Stack dump:
0.  Program arguments: /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/bin/swift -frontend -emit-module -filelist /var/folders/8v/9769m3ps7ds7h9pg23lzcls00000gn/T/sources-c8fe9a -disable-objc-attr-requires-foundation-module -target x86_64-apple-macosx10.9 -enable-objc-interop -sdk /Applications/Xcode-8W109m.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk -I /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64 -F /Applications/Xcode-8W109m.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/../../../Developer/Library/Frameworks -g -module-cache-path /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./module-cache -module-link-name swiftCore -nostdimport -parse-stdlib -resource-dir /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift -D INTERNAL_CHECKS_ENABLED -group-info-path /Users/Shared/dabrahams/s/swift/stdlib/public/core/GroupInfo.json -sil-serialize-all -Xcc -D__SWIFT_CURRENT_DYLIB=swiftCore -emit-module-doc-path /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftdoc -Onone -parse-as-library -module-name Swift -o /Users/Shared/dabrahams/s/build/Ninja-ReleaseAssert+stdlib-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule 
1.  While walking into decl extension of _Indexable at /Users/Shared/dabrahams/s/swift/stdlib/public/core/Range.swift.gyb:719:1

Other hashes

clang 1381e50988 Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
cmark d875488 Merge pull request #4 from llvm-beanz/generate-cmark-exports
compiler-rt 572336a0b Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
llbuild c8a84b3 Merge pull request #130 from hughbe/mkdir-windows
lldb 9ca9758f9 Merge pull request #149 from bitjammer/swift-typealias-equal-sourceloc
llvm e69035ecc18 Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
Traceback (most recent call last):

The text was updated successfully, but these errors were encountered:

dabrahams · 2017-03-19T02:37:34Z

Amazingly, this issue is suppressed by naming the unnamed parameters shown here (I used x as the name):

extension _Indexable {
  public subscript(_: UnboundedRange) -> SubSequence {
    return self[startIndex..<endIndex]
  }
}

extension _MutableIndexable {
  public subscript(_: UnboundedRange) -> SubSequence {
    get {
      return self[startIndex...]
    }
    set {
      self[startIndex...] = newValue
    }
  }
}

dabrahams · 2017-03-25T03:03:39Z

I believe this bug is now a blocker for me. I have a newer reproducer:

$ git fetch https://github.com/dabrahams/swift refs/bugs/SR-4286:BUG && git checkout BUG

which crashes like this when you build the standard library:

unhandled param context
UNREACHABLE executed at /Users/Shared/dabrahams/s/swift/lib/AST/ASTMangler.cpp:397!
0  swift                    0x0000000112dd5d5c llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 60
1  swift                    0x0000000112dd62d9 PrintStackTraceSignalHandler(void*) + 25
2  swift                    0x0000000112dd1fb9 llvm::sys::RunSignalHandlers() + 425
3  swift                    0x0000000112dd6772 SignalHandler(int) + 354
4  libsystem_platform.dylib 0x00007fffb453ab3a _sigtramp + 26
5  libsystem_platform.dylib 0x00007fff53cd30e0 _sigtramp + 2675541440
6  libsystem_c.dylib        0x00007fffb43bf420 abort + 129
7  swift                    0x0000000112ccf430 LLVMInstallFatalErrorHandler + 0
8  swift                    0x000000010e298306 getUnnamedParamIndex(swift::Decl const*) + 198
9  swift                    0x000000010e297cc4 swift::Mangle::ASTMangler::appendDeclName(swift::ValueDecl const*) + 1780
10 swift                    0x000000010e2912ea swift::Mangle::ASTMangler::appendEntity(swift::ValueDecl const*, llvm::StringRef, bool) + 106
11 swift                    0x000000010e28fbd6 swift::Mangle::ASTMangler::appendEntity(swift::ValueDecl const*) + 646
12 swift                    0x000000010e297599 swift::Mangle::ASTMangler::mangleDeclAsUSR(swift::ValueDecl*, llvm::StringRef) + 329
13 swift                    0x000000010e5cfc5a swift::ide::printDeclUSR(swift::ValueDecl const*, llvm::raw_ostream&) + 1050
14 swift                    0x000000010da3c968 writeDeclCommentTable(llvm::BCRecordLayout<1u, llvm::BCVBR<16u>, llvm::BCBlob> const&, swift::SourceFile const*, swift::ModuleDecl const*, DeclGroupNameContext&)::DeclCommentTableWriter::walkToDeclPre(swift::Decl*) + 312
15 swift                    0x000000010e34d99c (anonymous namespace)::Traversal::doIt(swift::Decl*) + 92
16 swift                    0x000000010e351807 (anonymous namespace)::Traversal::visitParameterList(swift::ParameterList*) + 135
17 swift                    0x000000010e351768 swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visit(swift::ParameterList*) + 40
18 swift                    0x000000010e351558 (anonymous namespace)::Traversal::visit(swift::ParameterList*) + 40
19 swift                    0x000000010e35769d (anonymous namespace)::Traversal::visitSubscriptDecl(swift::SubscriptDecl*) + 45
20 swift                    0x000000010e356d2f swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visit(swift::Decl*) + 671
21 swift                    0x000000010e3569a6 (anonymous namespace)::Traversal::visit(swift::Decl*) + 70
22 swift                    0x000000010e34d9ba (anonymous namespace)::Traversal::doIt(swift::Decl*) + 122
23 swift                    0x000000010e357dc5 (anonymous namespace)::Traversal::visitNominalTypeDecl(swift::NominalTypeDecl*) + 997
24 swift                    0x000000010e3575d8 swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visitProtocolDecl(swift::ProtocolDecl*) + 40
25 swift                    0x000000010e356cbb swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visit(swift::Decl*) + 555
26 swift                    0x000000010e3569a6 (anonymous namespace)::Traversal::visit(swift::Decl*) + 70
27 swift                    0x000000010e34d9ba (anonymous namespace)::Traversal::doIt(swift::Decl*) + 122
28 swift                    0x000000010e34d930 swift::Decl::walk(swift::ASTWalker&) + 64
29 swift                    0x000000010e513fad swift::SourceFile::walk(swift::ASTWalker&) + 525
30 swift                    0x000000010da20488 writeDeclCommentTable(llvm::BCRecordLayout<1u, llvm::BCVBR<16u>, llvm::BCBlob> const&, swift::SourceFile const*, swift::ModuleDecl const*, DeclGroupNameContext&) + 392
31 swift                    0x000000010da20202 swift::serialization::Serializer::writeDocToStream(llvm::raw_ostream&, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, llvm::StringRef, swift::ASTContext&) + 322
32 swift                    0x000000010da99142 swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*)::$_6::operator()(llvm::raw_ostream&) const + 274
33 swift                    0x000000010da99025 void llvm::function_ref<void (llvm::raw_ostream&)>::callback_fn<swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*)::$_6>(long, llvm::raw_ostream&) + 37
34 swift                    0x000000010da40f27 llvm::function_ref<void (llvm::raw_ostream&)>::operator()(llvm::raw_ostream&) const + 55
35 swift                    0x000000010da219a2 withOutputFile(swift::ASTContext&, llvm::StringRef, llvm::function_ref<void (llvm::raw_ostream&)>) + 2690
36 swift                    0x000000010da20f0d swift::serialize(llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::SerializationOptions const&, swift::SILModule const*) + 829
37 swift                    0x000000010bffc8ba performCompile(std::__1::unique_ptr<swift::CompilerInstance, std::__1::default_delete<swift::CompilerInstance> >&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 20858
38 swift                    0x000000010bff6a0f swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 13279
39 swift                    0x000000010bf2cae9 main + 4809
40 libdyld.dylib            0x00007fffb432b235 start + 1
Stack dump:
0.  Program arguments: /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/bin/swift -frontend -emit-module -filelist /var/folders/k9/nzq6k4f57xb5vw8wrgk_7cvh0000gn/T/sources-2dadc9 -disable-objc-attr-requires-foundation-module -target x86_64-apple-macosx10.9 -enable-objc-interop -sdk /Applications/Xcode-8E161.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk -I /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64 -F /Applications/Xcode-8E161.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/../../../Developer/Library/Frameworks -g -module-cache-path /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/./module-cache -module-link-name swiftCore -nostdimport -parse-stdlib -resource-dir /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/./lib/swift -D INTERNAL_CHECKS_ENABLED -group-info-path /Users/Shared/dabrahams/s/swift/stdlib/public/core/GroupInfo.json -sil-serialize-all -Xcc -D__SWIFT_CURRENT_DYLIB=swiftCore -emit-module-doc-path /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftdoc -Onone -parse-as-library -module-name Swift -o /Users/Shared/dabrahams/s/build/Ninja-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule
1.  While walking into decl 'AnyUInt16UnicodeView_' at /Users/Shared/dabrahams/s/swift/stdlib/public/core/AnyUnicode.swift.gyb:401:8

you can suppress the assertion by naming the subscript parameter in the protocol declaration (_ x:… instead of _:…), but then compilation just crashes unceremoniously.

Other hashes:

clang                              8f252f88d6 Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
cmark                              d875488 Merge pull request #&#8203;4 from llvm-beanz/generate-cmark-exports
compiler-rt                        657d67d7d Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
llbuild                            b696a76 Merge pull request #&#8203;134 from hughbe/wsl-expected
lldb                               9ca9758f9 Merge pull request #&#8203;149 from bitjammer/swift-typealias-equal-sourceloc
llvm                               f5eaf796665 Merge remote-tracking branch 'origin/swift-4.0-branch' into stable
ninja                              0b0374e Merge pull request #&#8203;1255 from tchajed/bind-localhost
swift                              74504d0f76f [stdlib] StringProto: rangeReplacement/uniqueness checking actually work
swift-corelibs-foundation          a6e77b4 Merge pull request #&#8203;924 from ianpartridge/nsregularexpression
swift-corelibs-libdispatch         d137aa4 Makes the DispatchIO initializer that accepts a path failable, reflecting the fact that a relative or non-existent path is invalid.
swift-corelibs-xctest              50cc074 XCTestAssertNoThrow (#184)
swift-integration-tests            8ae3586 Merge pull request #&#8203;18 from apple/disable-lldb-test
swift-xcode-playground-support     9e980f2 Temporary disable test to get the incremental bot blue again
swiftpm                            d72c4f25 Merge pull request #&#8203;1038 from heckj/SR-4327

slavapestov · 2017-03-25T05:48:04Z

#8335

dabrahams · 2017-03-25T23:00:05Z

@slavapestov Thanks; did you want to assign to me for closure?

slavapestov · 2017-03-26T01:47:58Z

Re-assigning to you for closure, continuation and macro.

dabrahams · 2017-03-27T05:09:11Z

Thanks, Slava!

swift-ci transferred this issue from apple/swift-issues Apr 25, 2022

AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022

This issue was closed.

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[SR-4286] [Blocker] unhandled param context #46869

[SR-4286] [Blocker] unhandled param context #46869

dabrahams commented Mar 19, 2017

dabrahams commented Mar 19, 2017

dabrahams commented Mar 25, 2017

slavapestov commented Mar 25, 2017

dabrahams commented Mar 25, 2017

slavapestov commented Mar 26, 2017

dabrahams commented Mar 27, 2017

[SR-4286] [Blocker] unhandled param context #46869

[SR-4286] [Blocker] unhandled param context #46869

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