| Issue |
150727
|
| Summary |
[clang] Assertion `CachedTokens[CachedLexPos-1].getLastLoc() == Tok.getAnnotationEndLoc() && "The annotation should be until the most recent cached token"' failed.
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
k-arrows
|
Reproducer:
https://godbolt.org/z/nqP8b5hrG
```cpp
template<int> class A
{
int i;
};
template<int N> int A<N>::i(decltype(
```
Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/Lex/PPCaching.cpp:151: void clang::Preprocessor::AnnotatePreviousCachedTokens(const clang::Token&): Assertion `CachedTokens[CachedLexPos-1].getLastLoc() == Tok.getAnnotationEndLoc() && "The annotation should be until the most recent cached token"' 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++ -gdwarf-4 -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>:6:29: at annotation token
#0 0x0000000003fd9768 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3fd9768)
#1 0x0000000003fd6b94 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3fd6b94)
#2 0x0000000003f1b388 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007b5c7c642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007b5c7c6969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#5 0x00007b5c7c642476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#6 0x00007b5c7c6287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#7 0x00007b5c7c62871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
#8 0x00007b5c7c639e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#9 0x0000000007e7430d clang::Preprocessor::AnnotatePreviousCachedTokens(clang::Token const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e7430d)
#10 0x00000000067167f6 clang::Parser::ParseOptionalCXXScopeSpecifier(clang::CXXScopeSpec&, clang::OpaquePtr<clang::QualType>, bool, bool, bool*, bool, clang::IdentifierInfo const**, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67167f6)
#11 0x00000000066861c3 clang::Parser::TryAnnotateTypeOrScopeToken(clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66861c3)
#12 0x00000000067b578d clang::Parser::isCXXDeclarationSpecifier(clang::ImplicitTypenameContext, clang::Parser::TPResult, bool*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67b578d)
#13 0x00000000067b8ad5 clang::Parser::TryParseParameterDeclarationClause(bool*, bool, clang::ImplicitTypenameContext) (.part.0) ParseTentative.cpp:0:0
#14 0x00000000067b90c2 clang::Parser::isCXXFunctionDeclarator(bool*, clang::ImplicitTypenameContext) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67b90c2)
#15 0x00000000066d5e51 clang::Parser::ParseDirectDeclarator(clang::Declarator&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d5e51)
#16 0x00000000066c35e3 clang::Parser::ParseDeclaratorInternal(clang::Declarator&, void (clang::Parser::*)(clang::Declarator&)) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66c35e3)
#17 0x0000000007f46071 clang::StackExhaustionHandler::runWithSufficientStackSpace(clang::SourceLocation, llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7f46071)
#18 0x00000000066c61cf 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+++0x66c61cf)
#19 0x00000000067a55f8 clang::Parser::ParseDeclarationAfterTemplate(clang::DeclaratorContext, clang::Parser::ParsedTemplateInfo&, clang::ParsingDeclRAIIObject&, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67a55f8)
#20 0x00000000067b2fe0 clang::Parser::ParseTemplateDeclarationOrSpecialization(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::AccessSpecifier) (.part.0) ParseTemplate.cpp:0:0
#21 0x00000000067b339a clang::Parser::ParseDeclarationStartingWithTemplate(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67b339a)
#22 0x00000000066cfb90 clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66cfb90)
#23 0x000000000668c85c clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x668c85c)
#24 0x000000000668d735 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x668d735)
#25 0x000000000667f4aa clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x667f4aa)
#26 0x0000000004985888 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4985888)
#27 0x0000000004c78555 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c78555)
#28 0x0000000004bf538e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4bf538e)
#29 0x0000000004d6c281 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4d6c281)
#30 0x0000000000daa6bf cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdaa6bf)
#31 0x0000000000da130a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#32 0x00000000049ec839 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
#33 0x0000000003f1b824 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f1b824)
#34 0x00000000049ece4f 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
#35 0x00000000049af47d clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49af47d)
#36 0x00000000049b050e 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+++0x49b050e)
#37 0x00000000049b8545 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49b8545)
#38 0x0000000000da6b6f clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xda6b6f)
#39 0x0000000000c5b964 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc5b964)
#40 0x00007b5c7c629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#41 0x00007b5c7c629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#42 0x0000000000da0db5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xda0db5)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134
```
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