| Issue |
176536
|
| Summary |
[clang][bytecode] Assertion `S.Current->getFunction()->hasRVO()' failed.
|
| Labels |
crash-on-invalid,
regression:19,
clang:bytecode
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/3j18eja86
```cpp
constexpr void foo(int n) { return n > 1 ? foo(n-1) : 0; }
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ByteCode/Interp.h:2862: bool clang::interp::RVOPtr(clang::interp::InterpState&, clang::interp::CodePtr): Assertion `S.Current->getFunction()->hasRVO()' 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 -fexperimental-new-constant-interpreter <source>
1. <eof> parser at end of file
2. <source>:1:27: parsing function body 'foo'
#0 0x000000000430a6b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x430a6b8)
#1 0x0000000004307b14 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4307b14)
#2 0x0000000004249de8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007f652a442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f652a4969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007f652a442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007f652a4287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007f652a42871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007f652a439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000007fbbca7 clang::interp::RVOPtr(clang::interp::InterpState&, clang::interp::CodePtr) (.isra.0) Interp.cpp:0:0
#10 0x0000000007ff07bc clang::interp::Interpret(clang::interp::InterpState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7ff07bc)
#11 0x0000000007e06d6b clang::interp::Context::isPotentialConstantExpr(clang::interp::State&, clang::FunctionDecl const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e06d6b)
#12 0x0000000007d967b1 clang::Expr::isPotentialConstantExpr(clang::FunctionDecl const*, llvm::SmallVectorImpl<std::pair<clang::SourceLocation, clang::PartialDiagnostic>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7d967b1)
#13 0x0000000006ec7b3e clang::Sema::CheckConstexprFunctionDefinition(clang::FunctionDecl const*, clang::Sema::CheckConstexprKind) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ec7b3e)
#14 0x0000000006e4d30b clang::Sema::ActOnFinishFunctionBody(clang::Decl*, clang::Stmt*, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6e4d30b)
#15 0x0000000006b6b1d4 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6b6b1d4)
#16 0x0000000006a715cb clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a715cb)
#17 0x0000000006aa7a3d 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+++0x6aa7a3d)
#18 0x0000000006a6472b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6472b)
#19 0x0000000006a64f1f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a64f1f)
#20 0x0000000006a6cd4a clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6cd4a)
#21 0x0000000006a6dce5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6dce5)
#22 0x0000000006a6e190 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a6e190)
#23 0x0000000006a4ed33 clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a4ed33)
#24 0x0000000004c722a8 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c722a8)
#25 0x0000000004f6bc55 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4f6bc55)
#26 0x0000000004eeb8de clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4eeb8de)
#27 0x000000000506698d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x506698d)
#28 0x0000000000ddcf9e cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xddcf9e)
#29 0x0000000000dd396a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#30 0x0000000000dd3aed 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
#31 0x0000000004ce55a9 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
#32 0x000000000424a284 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x424a284)
#33 0x0000000004ce5bbf 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
#34 0x0000000004ca6592 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4ca6592)
#35 0x0000000004ca753e 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+++0x4ca753e)
#36 0x0000000004cae985 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cae985)
#37 0x0000000000dd9311 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd9311)
#38 0x0000000000c969c4 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc969c4)
#39 0x00007f652a429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#40 0x00007f652a429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#41 0x0000000000dd3405 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdd3405)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
Goes back to clang-19:
https://godbolt.org/z/vGjqn5Mq9
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