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Add test case for crash triggered in `swift::AbstractTypeParamDecl::getSuperclass(...)`. Current number of unresolved compiler crashers: 34 (5512 resolved) /cc @slavapestov - just wanted to let you know that this crasher caused an assertion failure for the assertion `genericEnv != nullptr && "Too much circularity"` added on 2017-03-30 by you in commita79ef97c:-) Assertion failure in [`lib/AST/Decl.cpp (line 2320)`](bee17f7838/lib/AST/Decl.cpp (L2320)): ``` Assertion `genericEnv != nullptr && "Too much circularity"' failed. When executing: swift::Type swift::AbstractTypeParamDecl::getSuperclass() const ``` Assertion context: ```c++ getASTContext()); } Type AbstractTypeParamDecl::getSuperclass() const { auto *genericEnv = getDeclContext()->getGenericEnvironmentOfContext(); assert(genericEnv != nullptr && "Too much circularity"); auto contextTy = genericEnv->mapTypeIntoContext(getDeclaredInterfaceType()); if (auto *archetype = contextTy->getAs<ArchetypeType>()) return archetype->getSuperclass(); ``` Stack trace: ``` 0 0x000000000395fc48 llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/path/to/swift/bin/swift+0x395fc48) 1 0x0000000003960386 SignalHandler(int) (/path/to/swift/bin/swift+0x3960386) 2 0x00007f560e84c390 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x11390) 3 0x00007f560cd72428 gsignal /build/glibc-9tT8Do/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0 4 0x00007f560cd7402a abort /build/glibc-9tT8Do/glibc-2.23/stdlib/abort.c:91:0 5 0x00007f560cd6abd7 __assert_fail_base /build/glibc-9tT8Do/glibc-2.23/assert/assert.c:92:0 6 0x00007f560cd6ac82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82) 7 0x00000000014845d6 swift::AbstractTypeParamDecl::getSuperclass() const (/path/to/swift/bin/swift+0x14845d6) 8 0x000000000130f4ac checkTypeWitness(swift::TypeChecker&, swift::DeclContext*, swift::AssociatedTypeDecl*, swift::Type) (/path/to/swift/bin/swift+0x130f4ac) 9 0x000000000130c5ce (anonymous namespace)::ConformanceChecker::resolveTypeWitnessViaLookup(swift::AssociatedTypeDecl*) (/path/to/swift/bin/swift+0x130c5ce) 10 0x00000000012fb5ed swift::TypeChecker::resolveTypeWitness(swift::NormalProtocolConformance const*, swift::AssociatedTypeDecl*) (/path/to/swift/bin/swift+0x12fb5ed) 11 0x00000000014f133f swift::NormalProtocolConformance::getTypeWitnessAndDecl(swift::AssociatedTypeDecl*, swift::LazyResolver*) const (/path/to/swift/bin/swift+0x14f133f) 12 0x00000000014f1246 swift::ProtocolConformance::getTypeWitnessAndDecl(swift::AssociatedTypeDecl*, swift::LazyResolver*) const (/path/to/swift/bin/swift+0x14f1246) 13 0x00000000014b0f7b maybeAddSameTypeRequirementForNestedType(swift::GenericSignatureBuilder::PotentialArchetype*, swift::GenericSignatureBuilder::RequirementSource const*, swift::GenericSignatureBuilder&) (/path/to/swift/bin/swift+0x14b0f7b) 14 0x00000000014b065d swift::GenericSignatureBuilder::PotentialArchetype::updateNestedTypeForConformance(llvm::PointerUnion<swift::AssociatedTypeDecl*, swift::TypeAliasDecl*>, swift::GenericSignatureBuilder::PotentialArchetype::NestedTypeUpdate) (/path/to/swift/bin/swift+0x14b065d) 15 0x00000000014b4723 swift::GenericSignatureBuilder::addConformanceRequirement(swift::GenericSignatureBuilder::PotentialArchetype*, swift::ProtocolDecl*, swift::GenericSignatureBuilder::RequirementSource const*, llvm::SmallPtrSetImpl<swift::ProtocolDecl*>&) (/path/to/swift/bin/swift+0x14b4723) 16 0x00000000014b5e27 swift::GenericSignatureBuilder::addTypeRequirement(llvm::PointerUnion<swift::GenericSignatureBuilder::PotentialArchetype*, swift::Type>, llvm::PointerUnion<swift::GenericSignatureBuilder::PotentialArchetype*, swift::Type>, swift::GenericSignatureBuilder::FloatingRequirementSource, swift::Type, llvm::SmallPtrSetImpl<swift::ProtocolDecl*>*) (/path/to/swift/bin/swift+0x14b5e27) 17 0x00000000014c5958 bool llvm::function_ref<bool (swift::Type, swift::TypeRepr const*)>::callback_fn<swift::GenericSignatureBuilder::addInheritedRequirements(swift::TypeDecl*, swift::GenericSignatureBuilder::PotentialArchetype*, swift::Type, swift::GenericSignatureBuilder::RequirementSource const*, llvm::SmallPtrSetImpl<swift::ProtocolDecl*>&)::$_11>(long, swift::Type, swift::TypeRepr const*) (/path/to/swift/bin/swift+0x14c5958) 18 0x00000000014beb9d std::_Function_handler<void (swift::Type, swift::TypeRepr const*), visitInherited(llvm::ArrayRef<swift::TypeLoc>, llvm::function_ref<bool (swift::Type, swift::TypeRepr const*)>)::$_42>::_M_invoke(std::_Any_data const&, swift::Type&&, swift::TypeRepr const*&&) (/path/to/swift/bin/swift+0x14beb9d) 19 0x00000000014b41e7 swift::GenericSignatureBuilder::addInheritedRequirements(swift::TypeDecl*, swift::GenericSignatureBuilder::PotentialArchetype*, swift::Type, swift::GenericSignatureBuilder::RequirementSource const*, llvm::SmallPtrSetImpl<swift::ProtocolDecl*>&) (/path/to/swift/bin/swift+0x14b41e7) 20 0x00000000014b4030 swift::GenericSignatureBuilder::addGenericParameterRequirements(swift::GenericTypeParamDecl*) (/path/to/swift/bin/swift+0x14b4030) 21 0x00000000012e57b6 swift::TypeChecker::checkGenericParamList(swift::GenericSignatureBuilder*, swift::GenericParamList*, swift::GenericSignature*, swift::GenericTypeResolver*) (/path/to/swift/bin/swift+0x12e57b6) 22 0x00000000012e8c62 swift::TypeChecker::checkGenericEnvironment(swift::GenericParamList*, swift::DeclContext*, swift::GenericSignature*, bool, llvm::function_ref<void (swift::GenericSignatureBuilder&)>) (/path/to/swift/bin/swift+0x12e8c62) 23 0x00000000012e9089 swift::TypeChecker::validateGenericTypeSignature(swift::GenericTypeDecl*) (/path/to/swift/bin/swift+0x12e9089) 24 0x00000000012b991e swift::TypeChecker::validateDecl(swift::ValueDecl*) (/path/to/swift/bin/swift+0x12b991e) 25 0x00000000012c8943 (anonymous namespace)::DeclChecker::visitProtocolDecl(swift::ProtocolDecl*) (/path/to/swift/bin/swift+0x12c8943) 26 0x00000000012b7b57 (anonymous namespace)::DeclChecker::visit(swift::Decl*) (/path/to/swift/bin/swift+0x12b7b57) 27 0x00000000012b7953 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) (/path/to/swift/bin/swift+0x12b7953) 28 0x00000000013360a5 swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int) (/path/to/swift/bin/swift+0x13360a5) 29 0x0000000000fa3286 swift::CompilerInstance::performSema() (/path/to/swift/bin/swift+0xfa3286) 30 0x00000000004a8892 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/path/to/swift/bin/swift+0x4a8892) 31 0x00000000004651d7 main (/path/to/swift/bin/swift+0x4651d7) 32 0x00007f560cd5d830 __libc_start_main /build/glibc-9tT8Do/glibc-2.23/csu/../csu/libc-start.c:325:0 33 0x0000000000462879 _start (/path/to/swift/bin/swift+0x462879) ```
11 lines
474 B
Swift
11 lines
474 B
Swift
// This source file is part of the Swift.org open source project
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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// REQUIRES: asserts
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// RUN: not --crash %target-swift-frontend %s -emit-ir
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protocol A:a{typealias e}class a:A{typealias e:S
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