// RUN: %swift-ide-test -code-completion -source-filename %s -code-completion-token COMPLETE

struct UserListFormView {
    @ViewBuilder2 var body {
        GorEach(icons().map{ $0#^COMPLETE^# }) { icon in
            GStack {
             Jmage(icon)
            }.sag(icon)
        }
    }
}

protocol View {}
extension View {
  func sag<V>(_ tag: V) -> some View {}
}

enum Category: String {
    case housewares
}

func icons() -> [Category] {
    return  [.housewares]
}

struct GorEach<Data, Content> where Data : RandomAccessCollection {
  init(_ data: Data, @ViewBuilder2 content: @escaping (Data.Element) -> Content) {}
}

struct GStack<Content> : View where Content : View {
  init(@ViewBuilder2 content: () -> Content) {}
}


struct Jmage {
  init(_ name: String) {}
}

@resultBuilder public struct ViewBuilder2 {
  static func buildBlock<Content>(_ content: Content) -> Content where Content : View { fatalError() }
}

Assertion failed: (getFromType()->is<TupleType>() && getToType()->is<TupleType>()), function TupleContextualFailure, file CSDiagnostics.h, line 967.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.  Program arguments: /Users/alex/swift-src/nbuild/Release+Asserts/bin/swift-ide-test -module-cache-path /Users/alex/swift-src/nbuild/Release+Asserts/swift-test-results/x86_64-apple-macosx10.9/clang-module-cache -completion-cache-path /Users/alex/swift-src/nbuild/Release+Asserts/swift-test-results/x86_64-apple-macosx10.9/completion-cache -swift-version 4 -resource-dir /Users/alex/swift-src/nbuild/Release+Asserts/lib/swift -code-completion -source-filename /Users/alex/swift-src/swift/test/SourceKit/ttt.swift -code-completion-token COMPLETE
1.  While performing new completion
2.  While evaluating request CodeCompletionSecondPassRequest(source_file "/Users/alex/swift-src/swift/test/SourceKit/ttt.swift", )
3.  While evaluating request TypeCheckASTNodeAtLocRequest(0x7fe20f828418 AbstractFunctionDecl name=_ : <<error type>>, )
4.  While evaluating request TypeCheckASTNodeAtLocRequest(0x7fe20f828418 AbstractFunctionDecl name=_ : <<error type>>, )
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-ide-test           0x000000010935d787 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 39
1  swift-ide-test           0x000000010935c648 llvm::sys::RunSignalHandlers() + 248
2  swift-ide-test           0x000000010935ddc6 SignalHandler(int) + 278
3  libsystem_platform.dylib 0x00007ff807dfd06d _sigtramp + 29
4  libsystem_platform.dylib 000000000000000000 _sigtramp + 18446603370448826288
5  libsystem_c.dylib        0x00007ff807d39d10 abort + 123
6  libsystem_c.dylib        0x00007ff807d390be err + 0
7  swift-ide-test           0x0000000109833173 swift::constraints::TupleContextualFailure::TupleContextualFailure(swift::constraints::Solution const&, swift::ContextualTypePurpose, swift::Type, swift::Type, llvm::ArrayRef<unsigned int>, swift::constraints::ConstraintLocator*) (.cold.7) + 35
8  swift-ide-test           0x00000001057fb72f swift::constraints::TupleContextualFailure::TupleContextualFailure(swift::constraints::Solution const&, swift::ContextualTypePurpose, swift::Type, swift::Type, llvm::ArrayRef<unsigned int>, swift::constraints::ConstraintLocator*) + 319
9  swift-ide-test           0x00000001057f1bcb swift::constraints::AllowTupleTypeMismatch::coalesceAndDiagnose(swift::constraints::Solution const&, llvm::ArrayRef<swift::constraints::ConstraintFix*>, bool) const + 523
10 swift-ide-test           0x00000001057424a6 swift::constraints::ConstraintSystem::applySolutionFixes(swift::constraints::Solution const&) + 2166
11 swift-ide-test           0x0000000105742d3b swift::constraints::ConstraintSystem::applySolution(swift::constraints::Solution&, swift::constraints::SolutionApplicationTarget) + 75
12 swift-ide-test           0x000000010572db23 swift::TypeChecker::applyResultBuilderBodyTransform(swift::FuncDecl*, swift::Type) + 1523
13 swift-ide-test           0x00000001059d91fd swift::TypeCheckASTNodeAtLocRequest::evaluate(swift::Evaluator&, swift::DeclContext*, swift::SourceLoc) const + 237
14 swift-ide-test           0x0000000105a140d4 llvm::Expected<swift::TypeCheckASTNodeAtLocRequest::OutputType> swift::Evaluator::getResultUncached<swift::TypeCheckASTNodeAtLocRequest>(swift::TypeCheckASTNodeAtLocRequest const&) + 244
15 swift-ide-test           0x0000000105a0c854 swift::TypeCheckASTNodeAtLocRequest::OutputType swift::evaluateOrDefault<swift::TypeCheckASTNodeAtLocRequest>(swift::Evaluator&, swift::TypeCheckASTNodeAtLocRequest, swift::TypeCheckASTNodeAtLocRequest::OutputType) + 52
16 swift-ide-test           0x0000000105a0c801 swift::typeCheckASTNodeAtLoc(swift::DeclContext*, swift::SourceLoc) + 65
17 swift-ide-test           0x00000001059d92e9 swift::TypeCheckASTNodeAtLocRequest::evaluate(swift::Evaluator&, swift::DeclContext*, swift::SourceLoc) const + 473
18 swift-ide-test           0x0000000105a140d4 llvm::Expected<swift::TypeCheckASTNodeAtLocRequest::OutputType> swift::Evaluator::getResultUncached<swift::TypeCheckASTNodeAtLocRequest>(swift::TypeCheckASTNodeAtLocRequest const&) + 244
19 swift-ide-test           0x0000000105a0c854 swift::TypeCheckASTNodeAtLocRequest::OutputType swift::evaluateOrDefault<swift::TypeCheckASTNodeAtLocRequest>(swift::Evaluator&, swift::TypeCheckASTNodeAtLocRequest, swift::TypeCheckASTNodeAtLocRequest::OutputType) + 52
20 swift-ide-test           0x0000000105a0c801 swift::typeCheckASTNodeAtLoc(swift::DeclContext*, swift::SourceLoc) + 65
21 swift-ide-test           0x0000000104dc04b6 swift::ide::typeCheckContextAt(swift::DeclContext*, swift::SourceLoc) + 774
22 swift-ide-test           0x0000000104d9897e (anonymous namespace)::CodeCompletionCallbacksImpl::doneParsing() + 1582
23 swift-ide-test           0x0000000105c8c811 swift::Parser::performCodeCompletionSecondPassImpl(swift::CodeCompletionDelayedDeclState&) + 833
24 swift-ide-test           0x0000000105c8c3c4 swift::CodeCompletionSecondPassRequest::evaluate(swift::Evaluator&, swift::SourceFile*, swift::CodeCompletionCallbacksFactory*) const + 260
25 swift-ide-test           0x0000000105c96530 llvm::Expected<swift::CodeCompletionSecondPassRequest::OutputType> swift::Evaluator::getResultUncached<swift::CodeCompletionSecondPassRequest>(swift::CodeCompletionSecondPassRequest const&) + 272
26 swift-ide-test           0x0000000105c8c1a4 swift::CodeCompletionSecondPassRequest::OutputType swift::evaluateOrDefault<swift::CodeCompletionSecondPassRequest>(swift::Evaluator&, swift::CodeCompletionSecondPassRequest, swift::CodeCompletionSecondPassRequest::OutputType) + 52
27 swift-ide-test           0x0000000104dbe7c6 swift::ide::CompletionInstance::performNewOperation(llvm::Optional<llvm::hash_code>, swift::CompilerInvocation&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, llvm::MemoryBuffer*, unsigned int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, swift::DiagnosticConsumer*, llvm::function_ref<void (swift::CompilerInstance&, bool)>) + 582
28 swift-ide-test           0x0000000104dbec3c swift::ide::CompletionInstance::performOperation(swift::CompilerInvocation&, llvm::ArrayRef<char const*>, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, llvm::MemoryBuffer*, unsigned int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, swift::DiagnosticConsumer*, llvm::function_ref<void (swift::CompilerInstance&, bool)>) + 668
29 swift-ide-test           0x000000010499f192 doCodeCompletionImpl(swift::CodeCompletionCallbacksFactory*, swift::CompilerInvocation const&, llvm::StringRef, llvm::StringRef, llvm::StringRef, bool) + 1234
30 swift-ide-test           0x00000001049921ed main + 25453
31 dyld                     0x0000000114e384d5 start + 421
32 dyld                     000000000000000000 start + 18446744069064129744
33 swift-ide-test           0x0000000104987000 __dso_handle + 0