[Modules] "Failed to find all of the visible " "constructors by walking all the " "lexical members of the context." with inheriting constructors + noncopyable class · Issue #61065 · llvm/llvm-project (original) (raw)

Given the following valid set of translation units:

export module a;

struct base { base(int) {} };

export struct a : base { using base::base; };

export module b;

import a;

a b() { return a(1); }

export module c;

import a; import b;

struct noncopyable { noncopyable(noncopyable const &) = delete; };

struct c { noncopyable c0; a c1; };

When compiled with

clang++ -std=c++20 -x c++-module --precompile -c a.cpp -o a.pcm clang++ -std=c++20 -fmodule-file=a=a.pcm --precompile -x c++-module -c b.cpp -o b.pcm clang++ -std=c++20 -fmodule-file=a=a.pcm -fmodule-file=b=b.pcm -x c++-module --precompile -c c.cpp -o /dev/null

Leads to an assertion failure of

clang++: llvm/clang/lib/Serialization/ASTWriter.cpp:3988: void clang::ASTWriter::GenerateNameLookupTable(const clang::DeclContext *, llvm::SmallVectorImpl &): Assertion `ConstructorNameSet.empty() && "Failed to find all of the visible " "constructors by walking all the " "lexical members of the context."' 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: clang++ -std=c++20 -fmodule-file=a=a.pcm -fmodule-file=b=b.pcm -x c++-module --precompile -c c.cpp -o /dev/null

1.  <eof> parser at end of file

#0 0x00005561727296e1 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (clang+++0x41f16e1) #1 0x000055617272747e llvm::sys::RunSignalHandlers() (clang+++0x41ef47e) #2 0x0000556172728a41 llvm::sys::CleanupOnSignal(unsigned long) (clang+++0x41f0a41) #3 0x000055617269e5ab CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0 #4 0x00007fdf3a851f50 (/usr/lib/libc.so.6+0x38f50) #5 0x00007fdf3a8a08ec (/usr/lib/libc.so.6+0x878ec) #6 0x00007fdf3a851ea8 raise (/usr/lib/libc.so.6+0x38ea8) #7 0x00007fdf3a83b53d abort (/usr/lib/libc.so.6+0x2253d) #8 0x00007fdf3a83b45c (/usr/lib/libc.so.6+0x2245c) #9 0x00007fdf3a84a9f6 (/usr/lib/libc.so.6+0x319f6) #10 0x0000556173605f40 clang::ASTWriter::GenerateNameLookupTable(clang::DeclContext const*, llvm::SmallVectorImpl&) (clang+++0x50cdf40) #11 0x0000556173606c4b clang::ASTWriter::WriteDeclContextVisibleUpdate(clang::DeclContext const*) (clang+++0x50cec4b) #12 0x0000556173615b9d clang::ASTWriter::WriteASTCore(clang::Sema&, llvm::StringRef, clang::Module*) (clang+++0x50ddb9d) #13 0x000055617361104f clang::ASTWriter::WriteAST(clang::Sema&, llvm::StringRef, clang::Module*, llvm::StringRef, bool, bool) (clang+++0x50d904f) #14 0x0000556173663f68 clang::PCHGenerator::HandleTranslationUnit(clang::ASTContext&) (clang+++0x512bf68) #15 0x0000556173495d4c clang::MultiplexConsumer::HandleTranslationUnit(clang::ASTContext&) (clang+++0x4f5dd4c) #16 0x0000556174cee234 clang::ParseAST(clang::Sema&, bool, bool) (clang+++0x67b6234) #17 0x00005561733e1a0e clang::FrontendAction::Execute() (clang+++0x4ea9a0e) #18 0x00005561733490df clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (clang+++0x4e110df) #19 0x00005561734cc091 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (clang+++0x4f94091) #20 0x00005561712eab44 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (clang+++0x2db2b44) #21 0x00005561712e62dd ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0 #22 0x00005561731b1cb9 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optionalllvm::StringRef>, std::__cxx11::basic_string<char, std::char_traits, std::allocator>, bool) const::$_1>(long) Job.cpp:0:0 #23 0x000055617269e2ac llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (clang+++0x41662ac) #24 0x00005561731b10ad clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optionalllvm::StringRef>, std::__cxx11::basic_string<char, std::char_traits, std::allocator>, bool) const (clang+++0x4c790ad) #25 0x000055617316ae85 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (clang+++0x4c32e85) #26 0x000055617316b157 clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (clang+++0x4c33157) #27 0x000055617318b4a9 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (clang+++0x4c534a9) #28 0x00005561712e5577 clang_main(int, char**, llvm::ToolContext const&) (clang+++0x2dad577) #29 0x00005561712f7552 main (clang+++0x2dbf552) #30 0x00007fdf3a83c790 (/usr/lib/libc.so.6+0x23790) #31 0x00007fdf3a83c84a __libc_start_main (/usr/lib/libc.so.6+0x2384a) #32 0x00005561712e22e5 _start (clang+++0x2daa2e5) clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation) clang version 17.0.0 (https://github.com/llvm/llvm-project.git bf9e0ed1e61a407d7b0e133a9980cb8c29fc8ab0) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: build/bin clang++: note: diagnostic msg:

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang++: note: diagnostic msg: /tmp/c-1b679c.cppm clang++: note: diagnostic msg: /tmp/c-1b679c.sh clang++: note: diagnostic msg: