class Foo {
  static let main = Foo()
}

func bar(x: Foo = /*range start*/.main/*range end*/) {}

0.  While evaluating request RangeInfoRequest(/private/tmp/sdsdfsddsfds/sdsdfsddsfds/main.swift: (12:19, 12:24))
1.  While walking into decl 'bar(x:)' (at /private/tmp/sdsdfsddsfds/sdsdfsddsfds/main.swift:12:1)
 
Assertion failed: (ContextStack.back().Parent.getOpaqueValue() == Node.getOpaqueValue()), function leave, file /Users/buildnode/jenkins/workspace/oss-swift-package-osx/swift/lib/IDE/IDERequests.cpp, line 634.

Thread 1 Crashed:: Dispatch queue: sourcekit.swift.ConsumeAST
0   libsystem_kernel.dylib          0x00007fff6b42d33a __pthread_kill + 10
1   libsystem_pthread.dylib         0x00007fff6b4e9e60 pthread_kill + 430
2   libsystem_c.dylib               0x00007fff6b3b48a2 __abort + 139
3   libsystem_c.dylib               0x00007fff6b3b4817 abort + 135
4   libsystem_c.dylib               0x00007fff6b3b3ac6 __assert_rtn + 314
5   com.apple.SourceKitService.5.0.20200604101_osx  0x000000010f7fd723 RangeResolver::Implementation::leave(swift::ASTNode) (.cold.1) + 35
6   com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7c07bc RangeResolver::Implementation::leave(swift::ASTNode) + 892
7   com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7c0820 RangeResolver::walkToDeclPost(swift::Decl*) + 32
8   com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7bd0d3 (anonymous namespace)::SemaAnnotator::walkToDeclPost(swift::Decl*) + 147
9   com.apple.SourceKitService.5.0.20200604101_osx  0x000000010d5c97ab (anonymous namespace)::Traversal::doIt(swift::Decl*) + 251
10  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010d5c969b swift::Decl::walk(swift::ASTWalker&) + 27
11  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010d6f55f8 swift::SourceFile::walk(swift::ASTWalker&) + 232
12  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7bae7f swift::SourceEntityWalker::walk(swift::SourceFile&) + 255
13  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7c0bf3 RangeResolver::resolve() + 51
14  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7c10d6 swift::RangeInfoRequest::evaluate(swift::Evaluator&, swift::RangeInfoOwner) const + 86
15  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c7c1b50 swift::SimpleRequest<swift::RangeInfoRequest, swift::ide::ResolvedRangeInfo (swift::RangeInfoOwner), (swift::RequestFlags)2>::evaluateRequest(swift::RangeInfoRequest const&, swift::Evaluator&) + 32
16  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c6707d2 llvm::Expected<swift::RangeInfoRequest::OutputType> swift::Evaluator::getResultUncached<swift::RangeInfoRequest>(swift::RangeInfoRequest const&) + 354
17  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c6703a7 llvm::Expected<swift::RangeInfoRequest::OutputType> swift::Evaluator::getResultCached<swift::RangeInfoRequest, (void*)0>(swift::RangeInfoRequest const&) + 247
18  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c670181 swift::RangeInfoRequest::OutputType swift::evaluateOrDefault<swift::RangeInfoRequest>(swift::Evaluator&, swift::RangeInfoRequest, swift::RangeInfoRequest::OutputType) + 33
19  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c760ff7 swift::ide::collectAvailableRefactorings(swift::SourceFile*, swift::ide::RangeConfig, bool&, std::__1::vector<swift::ide::RefactoringKind, std::__1::allocator<swift::ide::RefactoringKind> >&, llvm::ArrayRef<swift::DiagnosticConsumer*>) + 1559
20  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c665bbb resolveCursor(SourceKit::SwiftLangSupport&, llvm::StringRef, unsigned int, unsigned int, bool, llvm::IntrusiveRefCntPtr<SourceKit::SwiftInvocation>, bool, bool, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::__1::function<void (SourceKit::RequestResult<SourceKit::CursorInfoData> const&)>)::CursorInfoConsumer::handlePrimaryAST(llvm::IntrusiveRefCntPtr<SourceKit::ASTUnit>) + 507
21  com.apple.SourceKitService.5.0.20200604101_osx  0x000000010c61f71f void SourceKit::WorkQueue::DispatchData::callAndDelete<SourceKit::ASTUnit::Implementation::consumeAsync(std::__1::shared_ptr<SourceKit::SwiftASTConsumer>, llvm::IntrusiveRefCntPtr<SourceKit::ASTUnit>)::$_0>(void*) + 95
22  libdispatch.dylib               0x00007fff6b28c658 _dispatch_client_callout + 8
23  libdispatch.dylib               0x00007fff6b291c44 _dispatch_lane_serial_drain + 597
24  libdispatch.dylib               0x00007fff6b2925d6 _dispatch_lane_invoke + 363
25  libdispatch.dylib               0x00007fff6b29bc09 _dispatch_workloop_worker_thread + 596
26  libsystem_pthread.dylib         0x00007fff6b4e6a3d _pthread_wqthread + 290
27  libsystem_pthread.dylib         0x00007fff6b4e5b77 start_wqthread + 15