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Compiler crash Found outside of lifetime use?! #78447

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hjyamauchi opened this issue Jan 6, 2025 · 1 comment
Open

Compiler crash Found outside of lifetime use?! #78447

hjyamauchi opened this issue Jan 6, 2025 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software macOS Platform: macOS SIL ownership Area → compiler → SIL: SIL ownership SIL Windows Platform: Windows

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@hjyamauchi
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hjyamauchi commented Jan 6, 2025 •
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Description

On macOS, the dev snapshot build https://download.swift.org/development/xcode/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a-osx.pkg crashes with

error: compile command failed due to signal 6 (use -v to see invocation)
Begin Error in Function: '$s5crash1BC3barSSSgyF'
Found outside of lifetime use?!
Value:   %4 = begin_borrow %3 : $A                       // users: %7, %5
Consuming User:   end_borrow %4 : $A                              // id: %7
Non Consuming User:   %11 = mark_dependence %10 : $*_xmlNs on %5 : $*UnsafeMutablePointer<_xmlNs> // user: %12
Block: bb0

End Error in Function: '$s5crash1BC3barSSSgyF'
Found ownership error?!
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs)
<unknown>:0: note: triggering standard assertion failure routine
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.

A local windows build from the main branch at head 1/6/2025 snapshot crashes with:

error: compile command failed due to exception 3 (use -v to see invocation)
Begin Error in Function: '$s5crash1BC3barSSSgyF'
Found outside of lifetime use?!
Value:   %4 = begin_borrow %3 : $A                       // users: %7, %5
Consuming User:   end_borrow %4 : $A                              // id: %7
Non Consuming User:   %11 = mark_dependence %10 : $*_xmlNs on %5 : $*UnsafeMutablePointer<_xmlNs> // user: %12
Block: bb0

End Error in Function: '$s5crash1BC3barSSSgyF'
Found ownership error?!
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs)
<unknown>:0: note: triggering standard assertion failure routine

Reproduction

Here's a command line log with a small reduced test.

>cat crash.swift
import C

func foo<T> (ptr: UnsafePointer<T>?) -> String? {
  return nil
}

class A {
  internal let ptr: xmlNsPtr
  internal init(ptr: xmlNsPtr) {
    self.ptr = ptr
  }
}

class B : A {
  func bar() -> String? {
    return foo(ptr: ptr.pointee.prefix)
  }
}

>cat header.h
typedef struct _xmlNs {
    const char *prefix;
} *xmlNsPtr;

>cat module.modulemap
module C {
  header "header.h"
}

>swiftc crash.swift -I .
error: compile command failed due to exception 3 (use -v to see invocation)
Begin Error in Function: '$s5crash1BC3barSSSgyF'
Found outside of lifetime use?!
Value:   %4 = begin_borrow %3 : $A                       // users: %7, %5
Consuming User:   end_borrow %4 : $A                              // id: %7
Non Consuming User:   %11 = mark_dependence %10 : $*_xmlNs on %5 : $*UnsafeMutablePointer<_xmlNs> // user: %12
Block: bb0

End Error in Function: '$s5crash1BC3barSSSgyF'
Found ownership error?!
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs)
<unknown>:0: note: triggering standard assertion failure routine

Stack dump

macOS with https://download.swift.org/development/xcode/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a-osx.pkg

Stack dump:
0.	Program arguments: /Users/hiroshi/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file crash.swift -target arm64-apple-macosx15.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -I . -color-diagnostics -empty-abi-descriptor -resource-dir /Users/hiroshi/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a.xctoolchain/usr/lib/swift -module-name crash -in-process-plugin-server-path /Users/hiroshi/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Users/hiroshi/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Users/hiroshi/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a.xctoolchain/usr/local/lib/swift/host/plugins -o /var/folders/ww/kxcj3hm12kd92gcwr9t3y7k40000gq/T/TemporaryDirectory.sSqMVR/crash-1.o
1.	Apple Swift version 6.2-dev (LLVM 06a77c5cc0ff511, Swift f7fb0991b79fcda)
2.	Compiling with effective version 5.10
3.	While verifying SIL function "@$s5crash1BC3barSSSgyF".
 for 'bar()' (at crash.swift:15:3)
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x00000001064b2020 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x00000001064b0704 llvm::sys::RunSignalHandlers() + 112
2  swift-frontend           0x00000001064b267c SignalHandler(int) + 304
3  libsystem_platform.dylib 0x000000018fa1ae04 _sigtramp + 56
4  libsystem_pthread.dylib  0x000000018f9e3f70 pthread_kill + 288
5  libsystem_c.dylib        0x000000018f8f0908 abort + 128
6  swift-frontend           0x00000001008d1154 swift::DiagnosticHelper::create(swift::CompilerInstance&, swift::CompilerInvocation const&, llvm::ArrayRef<char const*>, llvm::raw_pwrite_stream&, bool) + 0
7  swift-frontend           0x000000010642e644 llvm::report_fatal_error(llvm::Twine const&, bool) + 256
8  swift-frontend           0x000000010642e544 llvm::report_fatal_error(llvm::Twine const&, bool) + 0
9  swift-frontend           0x00000001016b4924 swift::LinearLifetimeChecker::ErrorBuilder::tryDumpErrorCounter() const + 0
10 swift-frontend           0x00000001016b2460 swift::LinearLifetimeChecker::checkValueImpl(swift::SILValue, llvm::ArrayRef<swift::Operand*>, llvm::ArrayRef<swift::Operand*>, swift::LinearLifetimeChecker::ErrorBuilder&, std::__1::optional<llvm::function_ref<void (swift::SILBasicBlock*)>>, std::__1::optional<llvm::function_ref<void (swift::Operand*)>>) + 1748
11 swift-frontend           0x00000001016b3594 swift::LinearLifetimeChecker::checkValue(swift::SILValue, llvm::ArrayRef<swift::Operand*>, llvm::ArrayRef<swift::Operand*>, swift::LinearLifetimeChecker::ErrorBuilder&) + 44
12 swift-frontend           0x00000001016baae4 swift::SILValueOwnershipChecker::check() + 636
13 swift-frontend           0x00000001016bcc04 verifySILValueHelper(swift::SILFunction const*, swift::SILValue, swift::LinearLifetimeChecker::ErrorBuilder&, swift::DeadEndBlocks*, swift::GuaranteedPhiVerifier&) + 156
14 swift-frontend           0x00000001016bcad0 swift::SILValue::verifyOwnership(swift::DeadEndBlocks*) const + 288
15 swift-frontend           0x00000001016dfa4c (anonymous namespace)::SILVerifier::checkValueBaseOwnership(swift::ValueBase*) + 164
16 swift-frontend           0x00000001016e2c18 (anonymous namespace)::SILVerifier::visitSILInstruction(swift::SILInstruction*) + 6640
17 swift-frontend           0x00000001016cf708 swift::SILVisitorBase<(anonymous namespace)::SILVerifier, void>::visitSILBasicBlock(swift::SILBasicBlock*) + 36180
18 swift-frontend           0x00000001016c68b4 (anonymous namespace)::SILVerifier::visitSILBasicBlock(swift::SILBasicBlock*) + 28
19 swift-frontend           0x00000001016c501c (anonymous namespace)::SILVerifier::visitSILFunction(swift::SILFunction*) + 10840
20 swift-frontend           0x00000001016bedf4 swift::SILFunction::verify(swift::CalleeCache*, bool, bool, bool) const + 224
21 swift-frontend           0x00000001016c1b4c swift::SILModule::verify(swift::CalleeCache*, bool, bool) const + 192
22 swift-frontend           0x00000001016c1a24 swift::SILModule::verify(bool, bool) const + 140
23 swift-frontend           0x00000001008e7420 swift::CompilerInstance::performSILProcessing(swift::SILModule*) + 148
24 swift-frontend           0x0000000100698914 performCompileStepsPostSILGen(swift::CompilerInstance&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>>, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) + 820
25 swift-frontend           0x0000000100697f98 swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 656
26 swift-frontend           0x00000001006a3f10 withSemanticAnalysis(swift::CompilerInstance&, swift::FrontendObserver*, llvm::function_ref<bool (swift::CompilerInstance&)>, bool) + 160
27 swift-frontend           0x0000000100699ca4 performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 716
28 swift-frontend           0x00000001006994c0 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2208
29 swift-frontend           0x000000010044d2dc swift::mainEntry(int, char const**) + 3100
30 dyld                     0x000000018f664274 start + 2840

Windows main branch on 1/6/2025

1.      compnerd.org Swift version 6.2-dev (LLVM 06a77c5cc0ff511, Swift f7fb0991b79fcda)
2.      Compiling with effective version 5.10
3.      While verifying SIL function "@$s4Fuzi10XMLElementC9namespaceSSSgvgAEyXEfU_".
 for expression at [C:\Users\hiroshi\arc\build\boost-debug-none\_deps\fuzi-src\Sources\Element.swift:29:55 - line:31:3] RangeText="{
    return ^-^(self.cNode.pointee.ns != nil ?self.cNode.pointee.ns.pointee.prefix :nil)
  "
Exception Code: 0x80000003
 #0 0x00007ff7d369f305 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6d7f305)
 #1 0x00007ff9f66ce6d5 (C:\Windows\System32\ucrtbase.dll+0x7e6d5)
 #2 0x00007ff9f66cf6e1 (C:\Windows\System32\ucrtbase.dll+0x7f6e1)
 #3 0x00007ff7cd1e8958 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x8c8958)
 #4 0x00007ff7d3621f7a (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6d01f7a)
 #5 0x00007ff7d3622121 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6d02121)
 #6 0x00007ff7ce003c71 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16e3c71)
 #7 0x00007ff7ce18964a (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x186964a)
 #8 0x00007ff7ce1888f4 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x18688f4)
 #9 0x00007ff7ce18840f (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x186840f)
#10 0x00007ff7ce001b3a (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16e1b3a)
#11 0x00007ff7ce004787 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16e4787)
#12 0x00007ff7ce00464c (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16e464c)
#13 0x00007ff7cdfdb6b4 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16bb6b4)
#14 0x00007ff7cdfd61c1 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16b61c1)
#15 0x00007ff7cdfdac6b (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16bac6b)
#16 0x00007ff7cdfdb3df (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16bb3df)
#17 0x00007ff7cdfcba24 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16aba24)
#18 0x00007ff7cdfcc95c (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x16ac95c)
#19 0x00007ff7cd1bf029 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x89f029)
#20 0x00007ff7ccf31c0d (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-
frontend.exe+0x611c0d)
#21 0x00007ff7ccf326ef (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6126ef)
#22 0x00007ff7ccf31377 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x611377)
#23 0x00007ff7ccf3190b (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x61190b)
#24 0x00007ff7ccf337e1 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6137e1)
#25 0x00007ff7ccd80950 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x460950)
#26 0x00007ff7ccd80413 (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x460413)
#27 0x00007ff7d36fe44c (C:\Users\hiroshi\AppData\Local\Programs\Swift\Toolchains\0.0.0+Asserts\usr\bin\swift-frontend.exe+0x6dde44c)
#28 0x00007ff9f7e8259d (C:\Windows\System32\KERNEL32.DLL+0x1259d)
#29 0x00007ff9f8acaf38 (C:\Windows\SYSTEM32\ntdll.dll+0x5af38)

Expected behavior

No crash

Environment

macos

https://download.swift.org/development/xcode/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a/swift-DEVELOPMENT-SNAPSHOT-2025-01-05-a-osx.pkg

windows, our main branch build on 1/6/2025

compnerd.org Swift version 6.2-dev (LLVM 06a77c5cc0ff511, Swift f7fb0991b79fcda)
Target: x86_64-unknown-windows-msvc

Additional information

This seems pretty recent. The crash didn't happen on 12/31/2024 and started around ~1/4/2025.
@hjyamauchi hjyamauchi added bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software triage needed This issue needs more specific labels labels Jan 6, 2025
@compnerd compnerd added Windows Platform: Windows macOS Platform: macOS SIL ownership Area → compiler → SIL: SIL ownership SIL and removed triage needed This issue needs more specific labels labels Jan 7, 2025
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compnerd commented Jan 7, 2025

CC: @gottesmm

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software macOS Platform: macOS SIL ownership Area → compiler → SIL: SIL ownership SIL Windows Platform: Windows
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