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mgadda/output.log

Last active January 2, 2017 22:20
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A simple but likely not fully distilled code snippet which produces swiftc segfault
Raw
output.log
> swiftc main.swift
0 swift 0x00000001094d13ad PrintStackTraceSignalHandler(void*) + 45
1 swift 0x00000001094d0b56 SignalHandler(int) + 790
2 libsystem_platform.dylib 0x00007fffa03fcbba _sigtramp + 26
3 libsystem_platform.dylib 0x00007fdef523a8a8 _sigtramp + 1424219400
4 swift 0x00000001066b979c swift::ASTVisitor<(anonymous namespace)::SILGenApply, void, void, void, void, void, void>::visit(swift::Expr*) + 4492
5 swift 0x00000001066be19e (anonymous namespace)::SILGenApply::visitApplyExpr(swift::ApplyExpr*) + 5166
6 swift 0x00000001066ac5f1 prepareApplyExpr(swift::Lowering::SILGenFunction&, swift::Expr*) + 273
7 swift 0x00000001066fd8b7 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 103
8 swift 0x000000010675dfaa swift::Lowering::SILGenFunction::emitReturnExpr(swift::SILLocation, swift::Expr*) + 506
9 swift 0x000000010675a7d7 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 183
10 swift 0x000000010675b6d6 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 4022
11 swift 0x000000010671bfa8 swift::Lowering::SILGenFunction::emitClosure(swift::AbstractClosureExpr*) + 312
12 swift 0x000000010669ce31 swift::Lowering::SILGenModule::emitClosure(swift::AbstractClosureExpr*) + 1089
13 swift 0x000000010670eb59 (anonymous namespace)::RValueEmitter::visitAbstractClosureExpr(swift::AbstractClosureExpr*, swift::Lowering::SGFContext) + 41
14 swift 0x00000001066888a4 swift::Lowering::ArgumentSource::getAsSingleValue(swift::Lowering::SILGenFunction&, swift::Lowering::SGFContext) && + 388
15 swift 0x00000001066b2532 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 2050
16 swift 0x00000001066b6d1d (anonymous namespace)::ArgEmitter::emitShuffle(swift::Expr*, swift::Expr*, llvm::ArrayRef<swift::TupleTypeElt>, swift::ConcreteDeclRef, llvm::ArrayRef<swift::Expr*>, llvm::ArrayRef<int>, llvm::ArrayRef<unsigned int>, swift::Type, swift::Lowering::AbstractionPattern) + 3885
17 swift 0x00000001066b4ca3 (anonymous namespace)::ArgEmitter::emitExpanded(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 2131
18 swift 0x00000001066b1e29 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 249
19 swift 0x00000001066b1407 (anonymous namespace)::CallSite::emit(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, (anonymous namespace)::ParamLowering&, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::SmallVectorImpl<std::__1::pair<swift::Lowering::LValue, swift::SILLocation> >&, llvm::Optional<swift::ForeignErrorConvention> const&, swift::ImportAsMemberStatus const&) && + 519
20 swift 0x00000001066ae09b (anonymous namespace)::CallEmission::apply(swift::Lowering::SGFContext) + 5339
21 swift 0x00000001066fd8c5 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 117
22 swift 0x0000000106711b40 swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 592
23 swift 0x00000001066a3aa2 swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 2098
24 swift 0x00000001066a562d swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*, llvm::Optional<unsigned int>, bool, bool) + 1629
25 swift 0x00000001064dde86 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 19510
26 swift 0x00000001064d72b3 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 17859
27 swift 0x00000001064935cf main + 8239
28 libdyld.dylib 0x00007fffa01ef255 start + 1
29 libdyld.dylib 0x000000000000000f start + 1608584635
Stack dump:
0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file main.swift -target x86_64-apple-macosx10.9 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk -color-diagnostics -module-name main -o /var/folders/xd/p1bhx8rj4yd3lc456ct5kw500000gn/T/main-c46fdb.o
1. While silgen closureexpr SIL function @_TF4mainU_FP_T_ for expression at [main.swift:24:13 - line:26:1] RangeText="{ results in
processResults(results)
}"
<unknown>:0: error: unable to execute command: Segmentation fault: 11
<unknown>:0: error: compile command failed due to signal (use -v to see invocation)
Raw
swiftc_segfault.swift
// To reproduce, run:
// git clone https://gist.github.com/c0f4c0448237a22bf99083b704e8faf4.git segfault
// cd segfault
// swiftc swiftc_segfault.swift
func makeInt() -> Int? {
return .none
}
guard let myInt = makeInt() else {
fatalError("we've run out of integers")
}
func bar() {
myInt
}
func foo(f: () -> ()) {}
foo { bar() }
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