[cfe-dev] invalid free for CompilerInstance

[Kihong Heo via cfe-dev]

Hi all,

I have the following code. The process works well but finally crashes at the last minute (delete CI) with "free(): invalid pointer”.

I appreciate any help you can give me.

bool run(std::string InputFileName, Action *R) {
CI = new clang::CompilerInstance();
assert(CI);

CI->createDiagnostics();
clang::TargetOptions &TO = CI->getTargetOpts();
TO.Triple = llvm::sys::getDefaultTargetTriple();
clang::TargetInfo *Target = clang::TargetInfo::CreateTargetInfo(
    CI->getDiagnostics(), CI->getInvocation().TargetOpts);
CI->setTarget(Target);

CI->createFileManager();
CI->createSourceManager(CI->getFileManager());
CI->createPreprocessor(clang::TU_Complete);
CI->createASTContext();
CI->setASTConsumer(std::unique_ptr<clang::ASTConsumer>(R));
clang::Preprocessor &PP = CI->getPreprocessor();
PP.getBuiltinInfo().initializeBuiltins(PP.getIdentifierTable(),
                                       PP.getLangOpts());

if (!CI->InitializeSourceManager(
        clang::FrontendInputFile(InputFileName, clang::InputKind::C))) {
  return false;
}

CI->createSema(clang::TU_Complete, 0);
clang::DiagnosticsEngine &Diag = CI->getDiagnostics();
Diag.setSuppressAllDiagnostics(true);
Diag.setIgnoreAllWarnings(true);

ParseAST(CI->getSema());

CI->getDiagnosticClient().EndSourceFile();

delete CI;   // abort
return true;
}

Thanks,
Kihong