Currrently, my computer doesn't support the latest version of Xcode, also meaning the latest version of swift (natively). So I'm using a toolchain to test it in newer versions.
Normally when it crashes, it gives a nice stack with function names. But using the toolchain versions makes the function names turn into some pointers. And the same thing happens from the terminal swift installed via swiftly.
Here is an example from terminal compiled swift:
1. Apple Swift version 6.3.1 (swift-6.3.1-RELEASE)
2. Compiling with the current language version
3. While evaluating request IRGenRequest(IR Generation for file "/Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift")
4. While emitting IR for source file /Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift
5. While emitting metadata for 'Foo' (at /Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift:7:1)
#0 0x0000000107b5e558 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x106065558)
#1 0x0000000107b5c6c3 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1060636c3)
#2 0x0000000107b5f066 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x106066066)
#3 0x00007ff81389b31d (/usr/lib/system/libsystem_platform.dylib+0x7ff801f0c31d)
#4 0x0000000000000000
#5 0x00000001022daba9 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1007e1ba9)
#6 0x00000001022a3b17 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1007aab17)
#7 0x0000000102211967 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x100718967)
#8 0x000000010221182c (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x10071882c)
#9 0x000000010233b256 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x100842256)
#10 0x000000010238a12c (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x10089112c)
#11 0x0000000102389fce (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x100890fce)
#12 0x0000000101b53119 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x10005a119)
#13 0x000000010233e7ea (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1008457ea)
#14 0x0000000101dc518c (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1002cc18c)
#15 0x0000000101dbe165 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1002c5165)
#16 0x0000000101dbd1ec (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1002c41ec)
#17 0x0000000101dc2207 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1002c9207)
#18 0x0000000101dbef18 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x1002c5f18)
#19 0x0000000101b2cfb1 (/Users/x/Library/Developer/Toolchains/swift-6.3.1-RELEASE.xctoolchain/usr/bin/swift-frontend+0x100033fb1)
#20 0x00007ff8134bd530
Xcode log reference
1. Apple Swift version 6.2.4 (swiftlang-6.2.4.1.4 clang-1700.6.4.2)
2. Compiling with the current language version
3. While evaluating request IRGenRequest(IR Generation for file "/Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift")
4. While emitting IR for source file /Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift
5. While emitting metadata for 'Foo' (at /Users/x/Xcode/TestMacro/Sources/Test/TestMacro.swift:7:1)
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 0x0000000109f4af98 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 40
1 swift-frontend 0x0000000109f48649 llvm::sys::RunSignalHandlers() + 233
2 swift-frontend 0x0000000109f4b555 SignalHandler(int, __siginfo*, void*) + 261
3 libsystem_platform.dylib 0x00007ff81389b31d _sigtramp + 29
4 libsystem_platform.dylib 0x00006000014ce1e0 _sigtramp + 18446708923391225568
5 swift-frontend 0x00000001034713af swift::irgen::TypeConverter::getProtocolInfo(swift::ProtocolDecl*, swift::irgen::ProtocolInfoKind) + 271
6 swift-frontend 0x000000010341543b swift::irgen::IRGenModule::emitProtocolDecl(swift::ProtocolDecl*) + 3307
7 swift-frontend 0x000000010332b067 swift::irgen::IRGenModule::emitGlobalDecl(swift::Decl*) + 135
8 swift-frontend 0x000000010332adbc swift::irgen::IRGenModule::emitSourceFile(swift::SourceFile&) + 476
9 swift-frontend 0x00000001034f7d26 swift::IRGenRequest::evaluate(swift::Evaluator&, swift::IRGenDescriptor) const + 5222
10 swift-frontend 0x00000001035571de swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)17>::evaluateRequest(swift::IRGenRequest const&, swift::Evaluator&) + 206
11 swift-frontend 0x0000000102d617bd swift::IRGenRequest::OutputType swift::Evaluator::getResultUncached<swift::IRGenRequest, swift::IRGenRequest::OutputType swift::evaluateOrFatal<swift::IRGenRequest>(swift::Evaluator&, swift::IRGenRequest)::'lambda'()>(swift::IRGenRequest const&, swift::IRGenRequest::OutputType swift::evaluateOrFatal<swift::IRGenRequest>(swift::Evaluator&, swift::IRGenRequest)::'lambda'()) + 365
12 swift-frontend 0x00000001034fbacc swift::performIRGeneration(swift::FileUnit*, swift::IRGenOptions const&, swift::TBDGenOptions const&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>>, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::GlobalVariable**) + 268
13 swift-frontend 0x0000000102dcf9b5 generateIR(swift::IRGenOptions const&, swift::TBDGenOptions const&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule>>, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, llvm::GlobalVariable*&, llvm::ArrayRef<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>) + 245
14 swift-frontend 0x0000000102dc9bc6 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*) + 2598
15 swift-frontend 0x0000000102dc875a swift::performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 1242
16 swift-frontend 0x0000000102dcc8ec performCompile(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 3036
17 swift-frontend 0x0000000102dcae46 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 4406
18 swift-frontend 0x0000000102d3479c swift::mainEntry(int, char const**) + 6524
19 dyld 0x00007ff8134bd530 start + 3056