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[SR-1333] Crash after "warning: no calls to throwing functions occur within 'try' expression" #43941

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nevil opened this issue Apr 27, 2016 · 9 comments
Closed

[SR-1333] Crash after "warning: no calls to throwing functions occur within 'try' expression" #43941

nevil opened this issue Apr 27, 2016 · 9 comments
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@nevil
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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 regression swift 4.0

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@nevil
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nevil commented Apr 27, 2016

Previous ID SR-1333
Radar rdar://problem/33351098
Original Reporter @nevil
Type Bug
Status Closed
Resolution Done

Attachment: Download

Environment

Mac, Xcode 7.3 with Xcode Swift 2.2.1 Snapshot 2016-04-23 (a),
or swift-4.0-DEVELOPMENT-SNAPSHOT-2017-05-11

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 4.0Regression, CompilerCrash
Assignee @nevil
Priority Medium

md5: 852695a5356393ba0414ab26aaa5f827

Issue Description:

swift crashes when it is compiling this simple, incorrect, snippet:

func returnTrue() -> Bool {
    return true
}

func crashFunction() {
    guard (try? returnTrue()) != nil else {
        return
    }
}

Stack trace

main.swift:6:17: warning: no calls to throwing functions occur within 'try' expression
    guard (try? returnTrue()) != nil else {
                ^
0  swift                    0x000000010918947b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x0000000109188706 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x0000000109189b4f SignalHandler(int) + 383
3  libsystem_platform.dylib 0x00007fff875aa52a _sigtramp + 26
4  swift                    0x0000000106a45ade swift::Lowering::TypeConverter::makeConstantInterfaceType(swift::SILDeclRef) + 1502
5  swift                    0x0000000106af3326 swift::Lowering::SILGenFunction::emitEpilog(swift::SILLocation, bool) + 86
6  swift                    0x0000000106b0dfec swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 412
7  swift                    0x0000000106aa69a3 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 1155
8  swift                    0x0000000106aaf4c2 swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 210
9  swift                    0x0000000106aab22b swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 683
10 swift                    0x0000000106aac2f7 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*, llvm::Optional<unsigned int>, bool, bool) + 903
11 swift                    0x0000000106aac815 swift::performSILGeneration(swift::FileUnit&, swift::SILOptions&, llvm::Optional<unsigned int>, bool) + 117
12 swift                    0x0000000106826957 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 13895
13 swift                    0x00000001068224ce frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2814
14 swift                    0x000000010681d3cc main + 1532
15 libdyld.dylib            0x00007fff9166e5ad start + 1
@nevil
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nevil commented Apr 28, 2016

The issue can be reproduced as below:

1) Put the code snippet in a file called SR-1333.swift.
2) In a shell, run "swiftc -o SR-1333 SR-1333.swift"

Result: Crash.

Output:

SR-1333.swift:6:17: warning: no calls to throwing functions occur within 'try' expression
    guard (try? returnTrue()) != nil else {
                ^
0  swift                    0x000000010e0bd66b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x000000010e0bc956 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x000000010e0bdccf SignalHandler(int) + 287
3  libsystem_platform.dylib 0x00007fff875aa52a _sigtramp + 26
4  libsystem_platform.dylib 000000000000000000 _sigtramp + 2024102640
5  swift                    0x000000010c01e996 swift::Lowering::SILGenFunction::emitEpilog(swift::SILLocation, bool) + 86
6  swift                    0x000000010c03164a swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 362
7  swift                    0x000000010bfe74b1 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 1057
8  swift                    0x000000010bfec424 swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 276
9  swift                    0x000000010bfebc6b swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 731
10 swift                    0x000000010bfec7b9 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*, llvm::Optional<unsigned int>, bool, bool) + 793
11 swift                    0x000000010bfecc23 swift::performSILGeneration(swift::FileUnit&, swift::SILOptions&, llvm::Optional<unsigned int>, bool) + 115
12 swift                    0x000000010be10473 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 12627
13 swift                    0x000000010be0c7bd frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2781
14 swift                    0x000000010be081dc main + 1932
15 libdyld.dylib            0x00007fff9166e5ad start + 1
Stack dump:
0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file SR-1333.swift -target x86_64-apple-macosx10.9 -enable-objc-interop -color-diagnostics -module-name main -o /var/folders/0l/kr96lmsd1wgbnq21nftllcwh0000gp/T/SR-1333-b3fbca.o
1.  While emitting SIL for 'crashFunction' at SR-1333.swift:5:1
<unknown>:0: error: unable to execute command: Segmentation fault: 11
<unknown>:0: error: compile command failed due to signal (use -v to see invocation)

@tkrajacic
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Was about to file bug but searching turned up this one.
This still crashes in the latest Swift 3.1 snapshot. (org.swift.3120170217a)

@nevil
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nevil commented May 16, 2017

Still happening with the latest 4.0 development snapshot: swift-4.0-DEVELOPMENT-SNAPSHOT-2017-05-11

@nevil
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nevil commented Jul 12, 2017

Still crashing with swift-4.0-DEVELOPMENT-SNAPSHOT-2017-07-10-a.xctoolchain

Interestingly it does not crash when an incorrect "-swift-version" argument is provided.

:> /Library/Developer/Toolchains/swift-4.0-DEVELOPMENT-SNAPSHOT-2017-07-10-a.xctoolchain/usr/bin/swiftc -o SR-1333 SR-1333.swift -swift-version 4.0
<unknown>:0: error: invalid value '4.0' in '-swift-version 4.0'
<unknown>:0: note: use major version, as in '-swift-version 4'
SR-1333.swift:6:17: warning: no calls to throwing functions occur within 'try' expression
    guard (try? returnTrue()) != nil else {
                ^

@swift-ci
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Comment by Kenneth Ackerson (JIRA)

Here is an Xcode project with some sample code that seems to cause this same issue as well help.zip

@jckarter
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Kenny (JIRA User) reports that his example regressed from 3.1 to 4.0 as well.

@jckarter
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@swift-ci create

@jckarter
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PR for master: #11008
PR for 4.0: #11009

@jckarter
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Merged to swift-4.0-branch as dd684ea.

@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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@nevil nevil

Labels
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 regression swift 4.0
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@nevil @jckarter @tkrajacic @swift-ci @AnthonyLatsis