tahonermann added a comment.
@cor3ntin, I suspect the answer is no, but do your changes perhaps address this
assertion failure? https://godbolt.org/z/1bPcPcWzv
int \u1{234};
Stack dump:
clang++: /root/llvm-project/clang/lib/Lex/LiteralSupport.cpp:382: void
clang::expandUCNs(llvm::SmallVectorImpl<char>&, llvm::StringRef): Assertion
`Value != -1U' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/
and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments:
/opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o
/app/output.s -mllvm --x86-asm-syntax=intel -S
--gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics
-fno-crash-diagnostics -std=c++20 <source>
1. <source>:1:5: current parser token '\u1{234}'
#0 0x0000564e3c70a2bf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3fe12bf)
#1 0x0000564e3c70826c llvm::sys::CleanupOnSignal(unsigned long)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3fdf26c)
#2 0x0000564e3c645468 CrashRecoverySignalHandler(int)
CrashRecoveryContext.cpp:0:0
#3 0x00007f19aebf0420 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#4 0x00007f19ae6bd00b raise (/lib/x86_64-linux-gnu/libc.so.6+0x4300b)
#5 0x00007f19ae69c859 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22859)
#6 0x00007f19ae69c729 (/lib/x86_64-linux-gnu/libc.so.6+0x22729)
#7 0x00007f19ae6adfd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
#8 0x0000564e4055e8b3 clang::expandUCNs(llvm::SmallVectorImpl<char>&,
llvm::StringRef)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e358b3)
#9 0x0000564e405dd531
clang::Preprocessor::LookUpIdentifierInfo(clang::Token&) const
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7eb4531)
#10 0x0000564e4055646c clang::Lexer::LexIdentifierContinue(clang::Token&,
char const*)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2d46c)
#11 0x0000564e4055993d clang::Lexer::LexTokenInternal(clang::Token&, bool)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e3093d)
#12 0x0000564e4055b1c3 clang::Lexer::Lex(clang::Token&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e321c3)
#13 0x0000564e405e0297 clang::Preprocessor::Lex(clang::Token&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7eb7297)
#14 0x0000564e3ed354d2 clang::Parser::ConsumeToken()
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660c4d2)
#15 0x0000564e3ed673a3
clang::Parser::ParseDeclarationSpecifiers(clang::DeclSpec&,
clang::Parser::ParsedTemplateInfo const&, clang::AccessSpecifier,
clang::Parser::DeclSpecContext, clang::Parser::LateParsedAttrList*,
clang::ImplicitTypenameContext)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x663e3a3)
#16 0x0000564e3ed3814b
clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&,
clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660f14b)
#17 0x0000564e3ed38a6f
clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&,
clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier)
(.part.0) Parser.cpp:0:0
#18 0x0000564e3ed3ed59
clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&,
clang::ParsedAttributes&, clang::ParsingDeclSpec*)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6615d59)
#19 0x0000564e3ed3f6ad
clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&,
clang::Sema::ModuleImportState&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66166ad)
#20 0x0000564e3ed3fb54
clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&,
clang::Sema::ModuleImportState&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6616b54)
#21 0x0000564e3ed335ba clang::ParseAST(clang::Sema&, bool, bool)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x660a5ba)
#22 0x0000564e3da51088 clang::CodeGenAction::ExecuteAction()
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x5328088)
#23 0x0000564e3d2d6599 clang::FrontendAction::Execute()
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4bad599)
#24 0x0000564e3d25ca9e
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4b33a9e)
#25 0x0000564e3d3bbf43
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c92f43)
#26 0x0000564e39bddf44 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x14b4f44)
#27 0x0000564e39bda027 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#28 0x0000564e3d0c6829 void llvm::function_ref<void
()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>,
std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#29 0x0000564e3c645c0a
llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f1cc0a)
#30 0x0000564e3d0c70df
clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>,
std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#31 0x0000564e3d09039c
clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&,
clang::driver::Command const*&, bool) const
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x496739c)
#32 0x0000564e3d090e1d
clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool)
const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4967e1d)
#33 0x0000564e3d09a24c
clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&,
llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x497124c)
#34 0x0000564e39bdc6d2 clang_main(int, char**)
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x14b36d2)
#35 0x00007f19ae69e083 __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#36 0x0000564e39bd52ce _start
(/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x14ac2ce)
clang-16: error: clang frontend command failed with exit code 134 (use -v to
see invocation)
Compiler returned: 134
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D138861/new/
https://reviews.llvm.org/D138861
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