alexfh wrote:
> Ok, this wasn't too bad actually: #170090 fixes the reproducer, so fingers
> crossed it also addresses the issue in the full-blown internal code 🤞 @alexfh
> if you have more cycles available, could you test the two PRs together?
With both PRs I'm getting at least this Clang assertion error on some of our
code. There's more, and I'll try to create a reproducer for this one, but maybe
the stack trace is enough to figure out what's wrong:
```
assert.h assertion failed at clang/include/clang/AST/Redeclarable.h:262 in
redecl_iterator
&clang::Redeclarable<clang::TagDecl>::redecl_iterator::operator++() [de
cl_type = clang::TagDecl]: 0 && "Passed first decl twice, invalid redecl chain!"
@ 0x561251408044 __assert_fail
@ 0x56124c214b91 clang::ASTDeclMerger::MergeDefinitionData()
@ 0x56124c21722e
clang::ASTDeclReader::VisitClassTemplateSpecializationDeclImpl()
@ 0x56124c207953 clang::declvisitor::Base<>::Visit()
@ 0x56124c207135 clang::ASTDeclReader::Visit()
@ 0x56124d69ddcf
clang::StackExhaustionHandler::runWithSufficientStackSpace()
@ 0x56124c22e7f1 clang::ASTReader::ReadDeclRecord()
@ 0x56124c1aa595 clang::ASTReader::GetDecl()
@ 0x56124c237639 clang::ASTReader::ReadDeclAs<>()
@ 0x56124c20800b clang::ASTDeclReader::VisitDecl()
@ 0x56124c209e52 clang::ASTDeclReader::VisitValueDecl()
@ 0x56124c20a175 clang::ASTDeclReader::VisitDeclaratorDecl()
@ 0x56124c20ae6a clang::ASTDeclReader::VisitFunctionDecl()
@ 0x56124c2152b6 clang::ASTDeclReader::VisitCXXMethodDecl()
@ 0x56124c207135 clang::ASTDeclReader::Visit()
@ 0x56124d69ddcf
clang::StackExhaustionHandler::runWithSufficientStackSpace()
@ 0x56124c22e7f1 clang::ASTReader::ReadDeclRecord()
@ 0x56124c1aa595 clang::ASTReader::GetDecl()
@ 0x56124c24af78 clang::ASTStmtReader::VisitMemberExpr()
@ 0x56124c25b2c1 clang::ASTReader::ReadStmtFromStream()
@ 0x56124c1b585d clang::ASTReader::GetExternalDeclStmt()
@ 0x56124d1f8839 clang::FunctionDecl::getBody()
@ 0x56124d2053f1 clang::FunctionDecl::getBody()
@ 0x56124b52493d clang::CodeGen::CodeGenFunction::GenerateCode()
@ 0x56124b55084c
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition()
@ 0x56124b547ea2 clang::CodeGen::CodeGenModule::EmitGlobalDefinition()
@ 0x56124b538856 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b538872 clang::CodeGen::CodeGenModule::EmitDeferred()
@ 0x56124b5351ee clang::CodeGen::CodeGenModule::Release()
@ 0x56124b67acee (anonymous
namespace)::CodeGeneratorImpl::HandleTranslationUnit()
@ 0x56124b1d3b9a clang::BackendConsumer::HandleTranslationUnit()
@ 0x56124c077788 clang::ParseAST()
@ 0x56124bdad5aa clang::FrontendAction::Execute()
@ 0x56124bd2145d clang::CompilerInstance::ExecuteAction()
@ 0x56124b1d316e clang::ExecuteCompilerInvocation()
@ 0x56124b1c65ea cc1_main()
@ 0x56124b1c3619 ExecuteCC1Tool()
@ 0x56124b1c5dcc llvm::function_ref<>::callback_fn<>()
@ 0x56124bee291e llvm::function_ref<>::callback_fn<>()
@ 0x56125108241c llvm::CrashRecoveryContext::RunSafely()
@ 0x56124bee1e04 clang::driver::CC1Command::Execute()
@ 0x56124be9f453 clang::driver::Compilation::ExecuteCommand()
@ 0x56124be9f6df clang::driver::Compilation::ExecuteJobs()
@ 0x56124beb9dc0 clang::driver::Driver::ExecuteCompilation()
@ 0x56124b1c2c1e clang_main()
@ 0x56124b1c0f74 main
```
https://github.com/llvm/llvm-project/pull/133057
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