| Issue |
174039
|
| Summary |
[clang] Assertion `LV.getLinkage() == OldLinkage' failed.
|
| Labels |
clang:frontend,
crash-on-invalid
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/WzMsvx4K7
```cpp
struct S {};
const S foo;
extern const S foo = {1};
extern S foo;
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/Decl.cpp:1617: clang::LinkageInfo clang::LinkageComputer::getLVForDecl(const clang::NamedDecl*, clang::LVComputationKind): Assertion `LV.getLinkage() == OldLinkage' 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++ -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics <source>
1. <source>:7:13: current parser token ';'
#0 0x0000000004302f28 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4302f28)
#1 0x0000000004300354 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4300354)
#2 0x0000000004244d58 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007f0437e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f0437e969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007f0437e42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007f0437e287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007f0437e2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007f0437e39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000007b9d07f clang::LinkageComputer::getLVForDecl(clang::NamedDecl const*, clang::LVComputationKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7b9d07f)
#10 0x0000000007b9d24f clang::NamedDecl::getLinkageInternal() const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7b9d24f)
#11 0x0000000006e267d1 clang::Sema::FinalizeDeclaration(clang::Decl*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e267d1)
#12 0x0000000006a6ff36 clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6ff36)
#13 0x0000000006a7dc7a clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a7dc7a)
#14 0x0000000006a3b32b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a3b32b)
#15 0x0000000006a3bb1f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a3bb1f)
#16 0x0000000006a4394a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a4394a)
#17 0x0000000006a448e5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a448e5)
#18 0x0000000006a2596a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a2596a)
#19 0x0000000004c64298 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c64298)
#20 0x0000000004f5a915 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f5a915)
#21 0x0000000004edabae clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4edabae)
#22 0x0000000005054c9d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x5054c9d)
#23 0x0000000000de672c cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xde672c)
#24 0x0000000000ddd17a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#25 0x0000000000ddd2fd int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#26 0x0000000004cd6969 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
#27 0x00000000042451f4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42451f4)
#28 0x0000000004cd6f7f 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
#29 0x0000000004c97a62 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c97a62)
#30 0x0000000004c98a0e 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+++0x4c98a0e)
#31 0x0000000004c9fe65 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c9fe65)
#32 0x0000000000de2b21 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xde2b21)
#33 0x0000000000c8d454 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc8d454)
#34 0x00007f0437e29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#35 0x00007f0437e29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#36 0x0000000000ddcc15 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xddcc15)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
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