| Issue |
95317
|
| Summary |
clangd crash when using prebuilt modules of the C standard library
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
AlexRpq
|
0 libLLVM.so.18.1 0x00007f47b393f716 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 54
1 libLLVM.so.18.1 0x00007f47b393d6d0 llvm::sys::RunSignalHandlers() + 80
2 libLLVM.so.18.1 0x00007f47b393fddb
3 libc.so.6 0x00007f47b26af520
4 libLLVM.so.18.1 0x00007f47b38bd589 llvm::MemoryBuffer::getMemBufferRef() const + 25
5 libclang-cpp.so.18.1 0x00007f47bce44bfa clang::CompilerInstance::createPreprocessor(clang::TranslationUnitKind) + 938
6 libclang-cpp.so.18.1 0x00007f47bcecd0a8 clang::FrontendAction::BeginSourceFile(clang::CompilerInstance&, clang::FrontendInputFile const&) + 5864
7 libclang-cpp.so.18.1 0x00007f47bce49075 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 693
8 libclang-cpp.so.18.1 0x00007f47bce53eb0
9 libLLVM.so.18.1 0x00007f47b388ef8c llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) + 140
10 libLLVM.so.18.1 0x00007f47b388f144
11 libLLVM.so.18.1 0x00007f47b388f27a
12 libc.so.6 0x00007f47b2701ac3
13 libc.so.6 0x00007f47b2793850
**CMake**:
cmake_minimum_required(VERSION 3.28)
# Compilers
set(CMAKE_C_COMPILER clang-18)
set(CMAKE_CXX_COMPILER clang++-18)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -std=c++20 -I/usr/include/c++/v1")
# Required for LSP
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
project(MyProject VERSION 1.0)
# Set C++ standard
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)
# Add executable
add_executable(MyExecutable src/main.cpp
)
# Specify the precompiled header
# target_precompile_headers(MyExecutable PRIVATE src/pch.h)
# Specify source files
target_sources(MyExecutable PRIVATE src/main.cpp)
# Add module interface file
target_sources(MyExecutable
PRIVATE
FILE_SET all_my_modules TYPE CXX_MODULES FILES
)
# Add flags to handle header units
target_compile_options(MyExecutable PRIVATE -fmodules -fimplicit-modules)
**Additional command for clangd**
"clangd-18",
"--offset-encoding=utf-16",
"--compile-commands-dir=build",
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