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[SR-7098] RxSwift source breakage: Assertion failed: (DisjunctionChoices.count(locator)) #49646

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clackary opened this issue Mar 1, 2018 · 4 comments
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[SR-7098] RxSwift source breakage: Assertion failed: (DisjunctionChoices.count(locator)) #49646

clackary opened this issue Mar 1, 2018 · 4 comments
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@clackary
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software type checker Area → compiler: Semantic analysis

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@clackary
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clackary commented Mar 1, 2018

Previous ID SR-7098
Radar rdar://problem/38394645
Original Reporter @clackary
Type Bug
Status Resolved
Resolution Done

Attachment: Download

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, CompilerCrash, TypeChecker
Assignee @clackary
Priority Medium

md5: cb5ad904f1219e3438502dee34d726a0

Issue Description:

To reproduce:

  1. Install latest GM/Beta Xcode
  2. $ git clone git@github.com:apple/swift-source-compat-suite.git
  3. $ cd swift-source-compat-suite

To build Swift from scratch before testing:
4. $ ./reproduce.py master --project-path RxSwift

Or if you've already built Swift:
4. $ ./reproduce.py master --project-path RxSwift --swiftc path/to/swiftc

https://ci.swift.org/job/swift-PR-source-compat-suite-test-macOS/119/artifact/swift-source-compat-suite/FAIL_RxSwift_4.0.3_BuildXcodeWorkspaceScheme_RxCocoa-tvOS_generic-platform-tvOS.log

Assertion failed: (DisjunctionChoices.count(locator)), function getDisjunctionChoice, file /Users/buildnode/jenkins/workspace-private/swift-PR-source-compat-suite-test-macOS/swift/lib/Sema/ConstraintSystem.h, line 689. 0 swift 0x000000010642f398 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40 1 swift 0x000000010642fa26 SignalHandler(int) + 422 2 libsystem_platform.dylib 0x00007fff6bec5f5a _sigtramp + 26 3 libsystem_platform.dylib 0x0000000000000001 _sigtramp + 2484314305 4 libsystem_c.dylib 0x00007fff6bcf0312 abort + 127 5 libsystem_c.dylib 0x00007fff6bcb8368 basename_r + 0 6 swift 0x00000001039cce28 swift::constraints::Solution::getDisjunctionChoice(swift::constraints::ConstraintLocator*) const + 360 7 swift 0x00000001039b8f29 (anonymous namespace)::ExprRewriter::buildMemberRef(swift::Expr*, swift::Type, swift::SourceLoc, swift::constraints::OverloadChoice, swift::DeclNameLoc, swift::Type, swift::constraints::ConstraintLocatorBuilder, swift::constraints::ConstraintLocatorBuilder, bool, swift::FunctionRefKind, swift::AccessSemantics, bool) + 5817 8 swift 0x00000001039c92f1 swift::ASTVisitor<(anonymous namespace)::ExprRewriter, swift::Expr*, void, void, void, void, void>::visit(swift::Expr*) + 33217 9 swift 0x00000001039b64a9 (anonymous namespace)::ExprRewriter::walkToExprPost(swift::Expr*) + 25 10 swift 0x00000001039bc076 (anonymous namespace)::ExprWalker::walkToExprPost(swift::Expr*) + 22 11 swift 0x0000000103dc837f swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visit(swift::Expr*) + 303 12 swift 0x0000000103dca9b6 (anonymous namespace)::Traversal::visitApplyExpr(swift::ApplyExpr*) + 86 13 swift 0x0000000103dc8353 swift::ASTVisitor<(anonymous namespace)::Traversal, swift::Expr*, swift::Stmt*, bool, swift::Pattern*, bool, void>::visit(swift::Expr*) + 259 14 swift 0x0000000103dc72d4 swift::Expr::walk(swift::ASTWalker&) + 84 15 swift 0x00000001039b325a swift::constraints::ConstraintSystem::applySolution(swift::constraints::Solution&, swift::Expr*, swift::Type, bool, bool, bool) + 586 16 swift 0x0000000103ac6739 swift::TypeChecker::typeCheckExpression(swift::Expr*&, swift::DeclContext*, swift::TypeLoc, swift::ContextualTypePurpose, swift::OptionSet<swift::TypeCheckExprFlags, unsigned int>, swift::ExprTypeCheckListener*, swift::constraints::ConstraintSystem*) + 1161 17 swift 0x0000000103b55fde swift::ASTVisitor<(anonymous namespace)::StmtChecker, void, swift::Stmt*, void, void, void, void>::visit(swift::Stmt*) + 558 18 swift 0x0000000103b5411d swift::TypeChecker::typeCheckFunctionBodyUntil(swift::FuncDecl*, swift::SourceLoc) + 269 19 swift 0x0000000103b54d41 swift::TypeChecker::typeCheckAbstractFunctionBody(swift::AbstractFunctionDecl*) + 385 20 swift 0x0000000103b76442 typeCheckFunctionsAndExternalDecls(swift::TypeChecker&) + 258 21 swift 0x0000000103b77566 swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int, unsigned int, unsigned int) + 1862 22 swift 0x00000001037d4207 swift::CompilerInstance::parseAndCheckTypes(swift::CompilerInstance::ImplicitImports const&) + 839 23 swift 0x00000001037d3a92 swift::CompilerInstance::performSema() + 450 24 swift 0x0000000102c70dbf performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 1775 25 swift 0x0000000102c6f72b swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2811 26 swift 0x0000000102c264e2 main + 3042 27 libdyld.dylib 0x00007fff6bc44115 start + 1 Stack dump: 0. 
1. While type-checking 'scrollViewDidScroll(_:)' at /Users/buildnode/jenkins/workspace-private/swift-PR-source-compat-suite-test-macOS/project_cache/RxSwift/RxCocoa/iOS/Proxies/RxScrollViewDelegateProxy.swift:71:12 2. While type-checking expression at [/Users/buildnode/jenkins/workspace-private/swift-PR-source-compat-suite-test-macOS/project_cache/RxSwift/RxCocoa/iOS/Proxies/RxScrollViewDelegateProxy.swift:78:9 - line:78:65] RangeText="self._forwardToDelegate?.scrollViewDidScroll?(scrollView)"
@belkadan
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belkadan commented Mar 1, 2018

cc @rudkx, @xedin

@rudkx
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rudkx commented Mar 2, 2018

Reduced. Reproduces with:

xcrun -sdk iphoneos swiftc -typecheck -target arm64-apple-ios11.3 sr7098.swift -import-objc-header sr7098.h -disable-bridging-pch

@rudkx
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rudkx commented Mar 8, 2018

@swift-ci create

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rudkx commented Apr 11, 2018

Merged: 44531db

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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@clackary clackary

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software type checker Area → compiler: Semantic analysis
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