| Issue |
91105
|
| Summary |
[Clang] [ICE] [crash-on-valid] [Modules] clang frontend crashes with `Unable to find instantiation of declaration`
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
yujincheng08
|
### Description
clang frontend crashes with `Unable to find instantiation of declaration`.
### Assertion
```
Unable to find instantiation of declaration!
UNREACHABLE executed at /root/llvm-project/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp:6471!
```
Minimum reproducible example:
https://godbolt.org/z/nascxfh31
### Backtrace
<details>
```
/opt/compiler-explorer/clang-assertions-trunk/bin/clang++ --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -Dtest_EXPORTS -fcolor-diagnostics -fno-crash-diagnostics -std=c++20 -O2 -g -DNDEBUG -fPIC -MD -MT CMakeFiles/test.dir/foo.cc.o -MF CMakeFiles/test.dir/foo.cc.o.d @CMakeFiles/test.dir/foo.cc.o.modmap -o CMakeFiles/test.dir/foo.cc.o -c /app/foo.cc
Unable to find instantiation of declaration!
UNREACHABLE executed at /root/llvm-project/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp:6471!
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++ --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -Dtest_EXPORTS -fcolor-diagnostics -fno-crash-diagnostics -std=c++20 -O2 -g -DNDEBUG -fPIC -MD -MT CMakeFiles/test.dir/foo.cc.o -MF CMakeFiles/test.dir/foo.cc.o.d @CMakeFiles/test.dir/foo.cc.o.modmap -o CMakeFiles/test.dir/foo.cc.o -c /app/foo.cc
1. /app/foo.cc:6:10: current parser token ';'
2. /app/foo.cc:5:10: parsing function body 'f'
3. /app/foo.cc:5:10: in compound statement ('{}')
4. /app/h.hpp:8:22: instantiating function definition 't<'k'>::operator T'
#0 0x0000000003979e88 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3979e88)
#1 0x0000000003977b6c llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3977b6c)
#2 0x00000000038c9528 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x000075fb86842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000075fb868969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x000075fb86842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x000075fb868287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00000000038d47ba (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x38d47ba)
#8 0x0000000006ef6705 clang::Sema::FindInstantiatedDecl(clang::SourceLocation, clang::NamedDecl*, clang::MultiLevelTemplateArgumentList const&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ef6705)
#9 0x0000000006e50111 (anonymous namespace)::TemplateInstantiator::TransformDecl(clang::SourceLocation, clang::Decl*) SemaTemplateInstantiate.cpp:0:0
#10 0x0000000006e89d80 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformDeclRefExpr(clang::DeclRefExpr*) SemaTemplateInstantiate.cpp:0:0
#11 0x0000000006e8a25b (anonymous namespace)::TemplateInstantiator::TransformDeclRefExpr(clang::DeclRefExpr*) SemaTemplateInstantiate.cpp:0:0
#12 0x0000000006e64814 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#13 0x0000000006e6612b clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExprs(clang::Expr* const*, unsigned int, bool, llvm::SmallVectorImpl<clang::Expr*>&, bool*) SemaTemplateInstantiate.cpp:0:0
#14 0x0000000006e6821c clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformInitListExpr(clang::InitListExpr*) SemaTemplateInstantiate.cpp:0:0
#15 0x0000000006e648b6 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) SemaTemplateInstantiate.cpp:0:0
#16 0x0000000006e664a0 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformInitializer(clang::Expr*, bool) (.part.0) SemaTemplateInstantiate.cpp:0:0
#17 0x0000000006e6682c clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformReturnStmt(clang::ReturnStmt*) SemaTemplateInstantiate.cpp:0:0
#18 0x0000000006e9f844 clang::TreeTransform<(anonymous namespace)::TemplateInstantiator>::TransformCompoundStmt(clang::CompoundStmt*, bool) SemaTemplateInstantiate.cpp:0:0
#19 0x0000000006ea6bfa clang::Sema::SubstStmt(clang::Stmt*, clang::MultiLevelTemplateArgumentList const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6ea6bfa)
#20 0x0000000006efd1b8 clang::Sema::InstantiateFunctionDefinition(clang::SourceLocation, clang::FunctionDecl*, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6efd1b8)
#21 0x000000000684c619 void llvm::function_ref<void ()>::callback_fn<clang::Sema::MarkFunctionReferenced(clang::SourceLocation, clang::FunctionDecl*, bool)::'lambda'()>(long) SemaExpr.cpp:0:0
#22 0x00000000063f3e31 clang::Sema::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x63f3e31)
#23 0x00000000068425ff clang::Sema::MarkFunctionReferenced(clang::SourceLocation, clang::FunctionDecl*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x68425ff)
#24 0x0000000006842cad MarkExprReferenced(clang::Sema&, clang::SourceLocation, clang::Decl*, clang::Expr*, bool, llvm::DenseMap<clang::VarDecl const*, int, llvm::DenseMapInfo<clang::VarDecl const*, void>, llvm::detail::DenseMapPair<clang::VarDecl const*, int>>&) SemaExpr.cpp:0:0
#25 0x00000000069efcd4 clang::Sema::BuildMemberExpr(clang::Expr*, bool, clang::SourceLocation, clang::NestedNameSpecifierLoc, clang::SourceLocation, clang::ValueDecl*, clang::DeclAccessPair, bool, clang::DeclarationNameInfo const&, clang::QualType, clang::ExprValueKind, clang::ExprObjectKind, clang::TemplateArgumentListInfo const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x69efcd4)
#26 0x0000000006c14b0e clang::Sema::BuildCXXMemberCallExpr(clang::Expr*, clang::NamedDecl*, clang::CXXConversionDecl*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6c14b0e)
#27 0x0000000006a40039 clang::InitializationSequence::Perform(clang::Sema&, clang::InitializedEntity const&, clang::InitializationKind const&, llvm::MutableArrayRef<clang::Expr*>, clang::QualType*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6a40039)
#28 0x0000000006613d51 clang::Sema::AddInitializerToDecl(clang::Decl*, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6613d51)
#29 0x00000000062bd65e clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62bd65e)
#30 0x00000000062cd64a 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+++0x62cd64a)
#31 0x00000000062d5d17 clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, bool, clang::Parser::ForRangeInit*, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62d5d17)
#32 0x00000000062d61b9 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62d61b9)
#33 0x000000000637b0cc clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x637b0cc)
#34 0x000000000637c387 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x637c387)
#35 0x000000000637d195 clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x637d195)
#36 0x000000000637e9fa clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x637e9fa)
#37 0x0000000006295951 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6295951)
#38 0x00000000062ce02c 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+++0x62ce02c)
#39 0x000000000628950e clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x628950e)
#40 0x0000000006289d03 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6289d03)
#41 0x0000000006290307 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6290307)
#42 0x00000000062911bf clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x62911bf)
#43 0x0000000006284c7a clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6284c7a)
#44 0x0000000004247228 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4247228)
#45 0x00000000044c85b9 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x44c85b9)
#46 0x000000000445067e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x445067e)
#47 0x00000000045af39e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x45af39e)
#48 0x0000000000c4fcec cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc4fcec)
#49 0x0000000000c48f7a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#50 0x000000000428aa69 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
#51 0x00000000038c99d4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x38c99d4)
#52 0x000000000428b05f 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
#53 0x00000000042513f5 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x42513f5)
#54 0x0000000004251e5d 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+++0x4251e5d)
#55 0x0000000004259be5 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4259be5)
#56 0x0000000000c4d185 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc4d185)
#57 0x0000000000b2f254 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xb2f254)
#58 0x000075fb86829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#59 0x000075fb86829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#60 0x0000000000c48a6e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc48a6e)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
```
</details>
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