`swift repl` crashes on async code

[KeithBauerANZ]

Description

swift repl crashes on async code

Reproduction

$ swift repl     
Welcome to Apple Swift version 6.3.2 (swiftlang-6.3.2.1.108 clang-2100.1.1.101).
Type :help for assistance.
  1> try await Task.sleep(nanoseconds: 1)
(it crashes)

Stack dump

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  lldb                     0x00000001048d8b70 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  lldb                     0x00000001048d6b6c llvm::sys::RunSignalHandlers() + 172
2  lldb                     0x00000001048d9618 SignalHandler(int, __siginfo*, void*) + 356
3  libsystem_platform.dylib 0x000000018aebf744 _sigtramp + 56
4  LLDB                     0x00000001114bf994 swift::Lowering::SILGenModule::getConfiguredExecutorFactory() + 48
5  LLDB                     0x000000011153ddbc swift::Lowering::SILGenFunction::emitAsyncMainThreadStart(swift::SILDeclRef) + 332
6  LLDB                     0x000000011159f78c swift::Lowering::SILGenModule::emitEntryPoint(swift::SourceFile*, swift::SILFunction*) + 176
7  LLDB                     0x00000001115a1114 swift::Lowering::SILGenModule::emitEntryPoint(swift::SourceFile*) + 116
8  LLDB                     0x00000001114c5070 swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) + 68
9  LLDB                     0x00000001114c55f4 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const + 732
10 LLDB                     0x00000001115954f4 std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>> swift::SimpleRequest<swift::ASTLoweringRequest, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>> (swift::ASTLoweringDescriptor), (swift::RequestFlags)17>::callDerived<0ul>(swift::Evaluator&, std::__1::integer_sequence<unsigned long, 0ul>) const + 208
11 LLDB                     0x00000001112fea28 swift::ASTLoweringRequest::OutputType swift::Evaluator::getResultUncached<swift::ASTLoweringRequest, swift::ASTLoweringRequest::OutputType swift::evaluateOrFatal<swift::ASTLoweringRequest>(swift::Evaluator&, swift::ASTLoweringRequest)::'lambda'()>(swift::ASTLoweringRequest const&, swift::ASTLoweringRequest::OutputType swift::evaluateOrFatal<swift::ASTLoweringRequest>(swift::Evaluator&, swift::ASTLoweringRequest)::'lambda'()) + 188
12 LLDB                     0x00000001114c58e0 swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&, swift::IRGenOptions const*) + 88
13 LLDB                     0x00000001106f96e0 lldb_private::SwiftExpressionParser::Parse(lldb_private::DiagnosticManager&, unsigned int, unsigned int) + 8664
14 LLDB                     0x000000011070dbac lldb_private::SwiftUserExpression::GetTextAndSetExpressionParser(lldb_private::DiagnosticManager&, std::__1::unique_ptr<lldb_private::SwiftExpressionSourceCode, std::__1::default_delete<lldb_private::SwiftExpressionSourceCode>>&, lldb_private::ExecutionContext&, lldb_private::ExecutionContextScope*) + 5560
15 LLDB                     0x000000011070e734 lldb_private::SwiftUserExpression::Parse(lldb_private::DiagnosticManager&, lldb_private::ExecutionContext&, lldb_private::ExecutionPolicy, bool, bool) + 1736
16 LLDB                     0x000000011058a6cc lldb_private::UserExpression::Evaluate(lldb_private::ExecutionContext&, lldb_private::EvaluateExpressionOptions const&, llvm::StringRef, llvm::StringRef, std::__1::shared_ptr<lldb_private::ValueObject>&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>*, lldb_private::ValueObject*) + 3376
17 LLDB                     0x00000001105876b0 lldb_private::REPL::IOHandlerInputComplete(lldb_private::IOHandler&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>&) + 2644
18 LLDB                     0x00000001104ece20 lldb_private::IOHandlerEditline::Run() + 292
19 LLDB                     0x00000001104cc8b0 lldb_private::Debugger::RunIOHandlers() + 128
20 LLDB                     0x00000001104d3328 std::__1::__function::__func<lldb_private::Debugger::StartIOHandlerThread()::$_0, void* ()>::operator()() + 28
21 LLDB                     0x0000000115c80a90 lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) + 132
22 LLDB                     0x0000000115ca4cb4 lldb_private::HostThreadMacOSX::ThreadCreateTrampoline(void*) + 32
23 libsystem_pthread.dylib  0x000000018aeb5c58 _pthread_start + 136
24 libsystem_pthread.dylib  0x000000018aeb0c1c thread_start + 8
zsh: segmentation fault  swift repl

Expected behavior

don't

Environment

swift-driver version: 1.148.6 Apple Swift version 6.3.2 (swiftlang-6.3.2.1.108 clang-2100.1.1.101)
Target: arm64-apple-macosx26.0

Additional information

No response