[LLVMbugs] [Bug 17576] New: Assertion failed: !Packed && "Could not place field even with packed struct!"

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17576

            Bug ID: 17576
           Summary: Assertion failed: !Packed && "Could not place field
                    even with packed struct!"
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rnk at google.com
                CC: llvmbugs at cs.uiuc.edu, timurrrr at google.com,
                    whunt at google.com
    Classification: Unclassified

This happens when self-hosting clang on a bunch of files.  This one in
particular was lib/AST/StmtPrinter.cpp.

I'm going to try to dump the AST record layout and see if it's funny.

file ..\tools\clang\lib\CodeGen\CGRecordLayoutBuilder.cpp, line 426

Simple stack trace:

`anonymous namespace'::CGRecordLayoutBuilder::LayoutField()
`anonymous namespace'::CGRecordLayoutBuilder::LayoutFields()
`anonymous namespace'::CGRecordLayoutBuilder::Layout()
clang::CodeGen::CodeGenTypes::ComputeRecordLayout()
clang::CodeGen::CodeGenTypes::ConvertRecordDeclType()
clang::CodeGen::CodeGenTypes::ConvertType()
clang::CodeGen::CodeGenTypes::ConvertTypeForMem()
clang::CodeGen::CodeGenTypes::ConvertType()
clang::CodeGen::CodeGenTypes::ConvertTypeForMem()
`anonymous namespace'::CGRecordLayoutBuilder::LayoutField()
`anonymous namespace'::CGRecordLayoutBuilder::LayoutFields()
`anonymous namespace'::CGRecordLayoutBuilder::Layout()
clang::CodeGen::CodeGenTypes::ComputeRecordLayout()
clang::CodeGen::CodeGenTypes::ConvertRecordDeclType()
clang::CodeGen::CodeGenTypes::getCGRecordLayout()
`anonymous namespace'::CGRecordLayoutBuilder::CheckZeroInitializable()
`anonymous namespace'::CGRecordLayoutBuilder::LayoutField()
`anonymous namespace'::CGRecordLayoutBuilder::LayoutFields()
`anonymous namespace'::CGRecordLayoutBuilder::Layout()
clang::CodeGen::CodeGenTypes::ComputeRecordLayout()
clang::CodeGen::CodeGenTypes::ConvertRecordDeclType()
clang::CodeGen::CodeGenTypes::ConvertType()
clang::CodeGen::CodeGenTypes::ConvertTypeForMem()
clang::CodeGen::CodeGenTypes::ConvertType()
clang::CodeGen::CodeGenTypes::arrangeLLVMFunctionInfo()
arrangeLLVMFunctionInfo()
arrangeCXXMethodType()
clang::CodeGen::CodeGenTypes::arrangeCXXMethodType()
clang::CodeGen::CodeGenTypes::arrangeCXXMethodDeclaration()
clang::CodeGen::CodeGenTypes::arrangeFunctionDeclaration()
clang::CodeGen::CodeGenTypes::arrangeGlobalDeclaration()
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition()
clang::CodeGen::CodeGenModule::EmitGlobalDefinition()
clang::CodeGen::CodeGenModule::EmitGlobal()
clang::CodeGen::CodeGenModule::EmitTopLevelDecl()
`anonymous namespace'::CodeGeneratorImpl::HandleTopLevelDecl()
clang::BackendConsumer::HandleTopLevelDecl()
clang::ParseAST()
clang::ASTFrontendAction::ExecuteAction()
clang::CodeGenAction::ExecuteAction()
clang::FrontendAction::Execute()
clang::CompilerInstance::ExecuteAction()
clang::ExecuteCompilerInvocation()

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