| Issue |
165445
|
| Summary |
[clang-21] Crash after upgrading to clang 21 with C++20 modules.
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
lilyatplyable
|
This is new since upgrading, was fine in clang-20.
[SeparatedSet-c2a664.sh](https://github.com/user-attachments/files/23194252/SeparatedSet-c2a664.sh)
[SeparatedSet-c2a664.cppm.zip](https://github.com/user-attachments/files/23194260/SeparatedSet-c2a664.cppm.zip)
Stack dump:
```
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: /usr/bin/clang-21 -cc1 -triple x86_64-redhat-linux-gnu -emit-module-interface -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name SeparatedSet.cppm -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/lily/mbox/q/cmake-build-debug -fcoverage-compilation-dir=/home/lily/mbox/q/cmake-build-debug -sys-header-deps -module-file-deps -D BOOST_ATOMIC_DYN_LINK -D BOOST_ATOMIC_NO_LIB -D BOOST_CHRONO_DYN_LINK -D BOOST_CHRONO_NO_LIB -D BOOST_FILESYSTEM_DYN_LINK -D BOOST_FILESYSTEM_NO_LIB -D BOOST_LOG_DYN_LINK -D BOOST_LOG_NO_LIB -D BOOST_LOG_SETUP_DYN_LINK -D BOOST_LOG_SETUP_NO_LIB -D BOOST_REGEX_DYN_LINK -D BOOST_REGEX_NO_LIB -D BOOST_SERIALIZATION_DYN_LINK -D BOOST_SERIALIZATION_NO_LIB -D BOOST_STACKTRACE_USE_ADDR2LINE -D BOOST_THREAD_DYN_LINK -D BOOST_THREAD_NO_LIB -D BOOST_UNIT_TEST_FRAMEWORK_DYN_LINK -D BOOST_UNIT_TEST_FRAMEWORK_NO_LIB -D CGAL_USE_CORE=1 -D CGAL_USE_GMPXX=1 -D OCC_CONVERT_SIGNALS -Wno-experimental-header-units -std=gnu++23 -fdeprecated-macro -ferror-limit 19 -fgnuc-version=4.2.1 -fno-implicit-modules -fmodule-file=external-modules/std.pcm -fmodule-file=external-modules/boost.pcm -fmodule-file=external-modules/cgal.pcm -fmodule-file=external-modules/opencascade.pcm -fmodule-file=external-modules/libdxfrw.pcm -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -x c++ SeparatedSet-c2a664.cppm
1. <eof> parser at end of file
#0 0x00007ff1da6cb519 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib64/libLLVM.so.21.1+0x50cb519)
#1 0x00007ff1da6cbf5d (/lib64/libLLVM.so.21.1+0x50cbf5d)
#2 0x00007ff1d50262c0 __restore_rt (/lib64/libc.so.6+0x1a2c0)
#3 0x00007ff1e14c00a0 (/lib64/libclang-cpp.so.21.1+0x34c00a0)
#4 0x00007ff1e14a05dd clang::ASTWriter::GenerateNameLookupTable(clang::ASTContext&, clang::DeclContext const*, llvm::SmallVectorImpl<char>&, llvm::SmallVectorImpl<char>&, llvm::SmallVectorImpl<char>&) (/lib64/libclang-cpp.so.21.1+0x34a05dd)
#5 0x00007ff1e14a325c clang::ASTWriter::WriteDeclContextVisibleUpdate(clang::ASTContext&, clang::DeclContext const*) (/lib64/libclang-cpp.so.21.1+0x34a325c)
#6 0x00007ff1e14ad207 clang::ASTWriter::WriteDeclAndTypes(clang::ASTContext&) (/lib64/libclang-cpp.so.21.1+0x34ad207)
#7 0x00007ff1e14a94a3 clang::ASTWriter::WriteASTCore(clang::Sema*, llvm::StringRef, clang::Module*) (/lib64/libclang-cpp.so.21.1+0x34a94a3)
#8 0x00007ff1e14a8a43 clang::ASTWriter::WriteAST(llvm::PointerUnion<clang::Sema*, clang::Preprocessor*>, llvm::StringRef, clang::Module*, llvm::StringRef, bool) (/lib64/libclang-cpp.so.21.1+0x34a8a43)
#9 0x00007ff1e14df613 clang::PCHGenerator::HandleTranslationUnit(clang::ASTContext&) (/lib64/libclang-cpp.so.21.1+0x34df613)
#10 0x00007ff1e14df80a clang::CXX20ModulesGenerator::HandleTranslationUnit(clang::ASTContext&) (/lib64/libclang-cpp.so.21.1+0x34df80a)
#11 0x00007ff1e15f8c15 clang::MultiplexConsumer::HandleTranslationUnit(clang::ASTContext&) (/lib64/libclang-cpp.so.21.1+0x35f8c15)
#12 0x00007ff1df4250b2 clang::ParseAST(clang::Sema&, bool, bool) (/lib64/libclang-cpp.so.21.1+0x14250b2)
#13 0x00007ff1dfdc6f0f clang::FrontendAction::Execute() (/lib64/libclang-cpp.so.21.1+0x1dc6f0f)
#14 0x00007ff1dfdc6a20 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/lib64/libclang-cpp.so.21.1+0x1dc6a20)
#15 0x00007ff1dfdc63c5 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/lib64/libclang-cpp.so.21.1+0x1dc63c5)
#16 0x0000563b84fe08d6 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/bin/clang-21+0x198d6)
#17 0x0000563b84fd7a4e (/usr/bin/clang-21+0x10a4e)
#18 0x0000563b84fd9534 clang_main(int, char**, llvm::ToolContext const&) (/usr/bin/clang-21+0x12534)
#19 0x0000563b84fd8782 main (/usr/bin/clang-21+0x11782)
#20 0x00007ff1d500f5b5 __libc_start_call_main (/lib64/libc.so.6+0x35b5)
#21 0x00007ff1d500f668 __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x3668)
#22 0x0000563b84fe2f85 _start (/usr/bin/clang-21+0x1bf85)
SeparatedSet-c2a664.sh: line 4: 28466 Segmentation fault (core dumped) "/usr/bin/clang-21" "-cc1" "-triple" "x86_64-redhat-linux-gnu" "-emit-module-interface" "-disable-free" "-clear-ast-before-backend" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "SeparatedSet.cppm" "-mrelocation-model" "pic" "-pic-level" "2" "-fhalf-no-semantic-interposition" "-mframe-pointer=all" "-fmath-errno" "-ffp-contract=on" "-fno-rounding-math" "-mconstructor-aliases" "-funwind-tables=2" "-target-cpu" "x86-64" "-tune-cpu" "generic" "-debugger-tuning=gdb" "-fdebug-compilation-dir=/home/lily/mbox/q/cmake-build-debug" "-fcoverage-compilation-dir=/home/lily/mbox/q/cmake-build-debug" "-sys-header-deps" "-module-file-deps" "-D" "BOOST_ATOMIC_DYN_LINK" "-D" "BOOST_ATOMIC_NO_LIB" "-D" "BOOST_CHRONO_DYN_LINK" "-D" "BOOST_CHRONO_NO_LIB" "-D" "BOOST_FILESYSTEM_DYN_LINK" "-D" "BOOST_FILESYSTEM_NO_LIB" "-D" "BOOST_LOG_DYN_LINK" "-D" "BOOST_LOG_NO_LIB" "-D" "BOOST_LOG_SETUP_DYN_LINK" "-D" "BOOST_LOG_SETUP_NO_LIB" "-D" "BOOST_REGEX_DYN_LINK" "-D" "BOOST_REGEX_NO_LIB" "-D" "BOOST_SERIALIZATION_DYN_LINK" "-D" "BOOST_SERIALIZATION_NO_LIB" "-D" "BOOST_STACKTRACE_USE_ADDR2LINE" "-D" "BOOST_THREAD_DYN_LINK" "-D" "BOOST_THREAD_NO_LIB" "-D" "BOOST_UNIT_TEST_FRAMEWORK_DYN_LINK" "-D" "BOOST_UNIT_TEST_FRAMEWORK_NO_LIB" "-D" "CGAL_USE_CORE=1" "-D" "CGAL_USE_GMPXX=1" "-D" "OCC_CONVERT_SIGNALS" "-Wno-experimental-header-units" "-std=gnu++23" "-fdeprecated-macro" "-ferror-limit" "19" "-fgnuc-version=4.2.1" "-fno-implicit-modules" "-fmodule-file=external-modules/std.pcm" "-fmodule-file=external-modules/boost.pcm" "-fmodule-file=external-modules/cgal.pcm" "-fmodule-file=external-modules/opencascade.pcm" "-fmodule-file=external-modules/libdxfrw.pcm" "-fskip-odr-check-in-gmf" "-fcxx-exceptions" "-fexceptions" "-faddrsig" "-D__GCC_HAVE_DWARF2_CFI_ASM=1" "-x" "c++" "SeparatedSet-c2a664.cppm"
```
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
