[swiftc (57 vs. 5600)] Add crasher in swift::GenericSignature::getConformanceAccessPath #12288
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…formanceAccessPath Add test case for crash triggered in `swift::GenericSignature::getConformanceAccessPath`. Current number of unresolved compiler crashers: 57 (5600 resolved) /cc @DougGregor - just wanted to let you know that this crasher caused an assertion failure for the assertion `hasConformanceInSignature(inProtocol->getRequirementSignature(), subjectType, conformingProto) && "missing explicit conformance in requirement signature"` added on 2017-03-08 by you in commit 1f8b0f9 :-) Assertion failure in [`lib/AST/GenericSignature.cpp (line 854)`](https://github.com/apple/swift/blob/38bf97bacb7aa9304cf22fdc4c261e7ed70499b7/lib/AST/GenericSignature.cpp#L854): ``` Assertion `hasConformanceInSignature(inProtocol->getRequirementSignature(), subjectType, conformingProto) && "missing explicit conformance in requirement signature"' failed. When executing: auto swift::GenericSignature::getConformanceAccessPath(swift::Type, swift::ProtocolDecl *, swift::ModuleDecl &)::(anonymous class)::operator()(ArrayRef<swift::Requirement>, const RequirementSource *, swift::ProtocolDecl *, swift::Type, swift::ProtocolDecl *) const ``` Assertion context: ```c++ ->getCanonicalTypeInContext(subjectType, *inProtocol->getParentModule()); assert(hasConformanceInSignature(inProtocol->getRequirementSignature(), subjectType, conformingProto) && "missing explicit conformance in requirement signature"); // Record this step. path.path.push_back({subjectType, conformingProto}); return; } ``` Stack trace: ``` 0 0x0000000003ea2314 PrintStackTraceSignalHandler(void*) (/path/to/swift/bin/swift+0x3ea2314) 1 0x0000000003ea2656 SignalHandler(int) (/path/to/swift/bin/swift+0x3ea2656) 2 0x00007f052cd8f390 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x11390) 3 0x00007f052b2b4428 gsignal /build/glibc-bfm8X4/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0 4 0x00007f052b2b602a abort /build/glibc-bfm8X4/glibc-2.23/stdlib/abort.c:91:0 5 0x00007f052b2acbd7 __assert_fail_base /build/glibc-bfm8X4/glibc-2.23/assert/assert.c:92:0 6 0x00007f052b2acc82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82) 7 0x0000000001671e89 std::_Function_handler<void (llvm::ArrayRef<swift::Requirement>, swift::GenericSignatureBuilder::RequirementSource const*, swift::ProtocolDecl*, swift::Type, swift::ProtocolDecl*), swift::GenericSignature::getConformanceAccessPath(swift::Type, swift::ProtocolDecl*, swift::ModuleDecl&)::$_11>::_M_invoke(std::_Any_data const&, llvm::ArrayRef<swift::Requirement>&&, swift::GenericSignatureBuilder::RequirementSource const*&&, swift::ProtocolDecl*&&, swift::Type&&, swift::ProtocolDecl*&&) (/path/to/swift/bin/swift+0x1671e89) 8 0x00000000016721ca std::_Function_handler<void (llvm::ArrayRef<swift::Requirement>, swift::GenericSignatureBuilder::RequirementSource const*, swift::ProtocolDecl*, swift::Type, swift::ProtocolDecl*), swift::GenericSignature::getConformanceAccessPath(swift::Type, swift::ProtocolDecl*, swift::ModuleDecl&)::$_11>::_M_invoke(std::_Any_data const&, llvm::ArrayRef<swift::Requirement>&&, swift::GenericSignatureBuilder::RequirementSource const*&&, swift::ProtocolDecl*&&, swift::Type&&, swift::ProtocolDecl*&&) (/path/to/swift/bin/swift+0x16721ca) 9 0x0000000001670b39 swift::GenericSignature::getConformanceAccessPath(swift::Type, swift::ProtocolDecl*, swift::ModuleDecl&) (/path/to/swift/bin/swift+0x1670b39) 10 0x00000000016d72f5 swift::SubstitutionMap::lookupConformance(swift::CanType, swift::ProtocolDecl*) const (/path/to/swift/bin/swift+0x16d72f5) 11 0x00000000016717ae bool llvm::function_ref<bool (swift::Type, llvm::ArrayRef<swift::Requirement>)>::callback_fn<swift::GenericSignature::getSubstitutions(swift::SubstitutionMap const&, llvm::SmallVectorImpl<swift::Substitution>&) const::$_8>(long, swift::Type, llvm::ArrayRef<swift::Requirement>) (/path/to/swift/bin/swift+0x16717ae) 12 0x000000000166e677 swift::GenericSignature::enumeratePairedRequirements(llvm::function_ref<bool (swift::Type, llvm::ArrayRef<swift::Requirement>)>) const (/path/to/swift/bin/swift+0x166e677) 13 0x000000000166fc52 swift::GenericSignature::getSubstitutions(swift::SubstitutionMap const&, llvm::SmallVectorImpl<swift::Substitution>&) const (/path/to/swift/bin/swift+0x166fc52) 14 0x00000000012eb8bb (anonymous namespace)::RequirementMatch::getWitness(swift::ASTContext&, (anonymous namespace)::RequirementEnvironment&&) const (/path/to/swift/bin/swift+0x12eb8bb) 15 0x00000000012f0556 (anonymous namespace)::ConformanceChecker::recordWitness(swift::ValueDecl*, (anonymous namespace)::RequirementMatch const&, (anonymous namespace)::RequirementEnvironment&&) (/path/to/swift/bin/swift+0x12f0556) 16 0x00000000012ee269 (anonymous namespace)::ConformanceChecker::resolveWitnessViaLookup(swift::ValueDecl*) (/path/to/swift/bin/swift+0x12ee269) 17 0x00000000012e3eae (anonymous namespace)::MultiConformanceChecker::checkAllConformances() (/path/to/swift/bin/swift+0x12e3eae) 18 0x00000000012e542a swift::TypeChecker::checkConformancesInContext(swift::DeclContext*, swift::IterableDeclContext*) (/path/to/swift/bin/swift+0x12e542a) 19 0x00000000012b2a9d (anonymous namespace)::DeclChecker::visitClassDecl(swift::ClassDecl*) (/path/to/swift/bin/swift+0x12b2a9d) 20 0x00000000012a0a1e (anonymous namespace)::DeclChecker::visit(swift::Decl*) (/path/to/swift/bin/swift+0x12a0a1e) 21 0x00000000012a07c3 swift::TypeChecker::typeCheckDecl(swift::Decl*, bool) (/path/to/swift/bin/swift+0x12a07c3) 22 0x00000000013313aa swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int, unsigned int, unsigned int, unsigned int) (/path/to/swift/bin/swift+0x13313aa) 23 0x0000000001054ae4 swift::CompilerInstance::parseAndTypeCheckMainFile(swift::PersistentParserState&, swift::DelayedParsingCallbacks*, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>) (/path/to/swift/bin/swift+0x1054ae4) 24 0x0000000001053ba7 swift::CompilerInstance::parseAndCheckTypes(swift::CompilerInstance::ImplicitImports const&) (/path/to/swift/bin/swift+0x1053ba7) 25 0x00000000010534ca swift::CompilerInstance::performSema() (/path/to/swift/bin/swift+0x10534ca) 26 0x00000000004bdb56 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) (/path/to/swift/bin/swift+0x4bdb56) 27 0x00000000004bc919 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) (/path/to/swift/bin/swift+0x4bc919) 28 0x0000000000474c14 main (/path/to/swift/bin/swift+0x474c14) 29 0x00007f052b29f830 __libc_start_main /build/glibc-bfm8X4/glibc-2.23/csu/../csu/libc-start.c:325:0 30 0x00000000004724c9 _start (/path/to/swift/bin/swift+0x4724c9) ```
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@swift-ci please smoke test and merge |
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@swift-ci please test and merge |
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Add test case for crash triggered in
swift::GenericSignature::getConformanceAccessPath.Current number of unresolved compiler crashers: 57 (5600 resolved)
/cc @DougGregor - just wanted to let you know that this crasher caused an assertion failure for the assertion
hasConformanceInSignature(inProtocol->getRequirementSignature(), subjectType, conformingProto) && "missing explicit conformance in requirement signature"added on 2017-03-08 by you in commit 1f8b0f9 :-)Assertion failure in
lib/AST/GenericSignature.cpp (line 854):Assertion context:
Stack trace: