0

我正在尝试运行 clangTool 并使用地址清理程序。但是会发生毒后使用错误。它在 ubuntu 14.04 和 ubuntu 18.04 上复制。你能帮忙找出问题所在吗？

使用地址清理程序时出错：

Use-after-poison on address 0x621000006550 at pc 0x0000004c9fa7 bp 0x7ffda1facc90 sp 0x7ffda1fac440
WRITE of size 8 at 0x621000006550 thread T0
__interceptor_memcpy.part.0
RegisterBuiltinMacro(clang::Preprocessor&, char const*)
clang::Preprocessor::RegisterBuiltinMacros()
clang::Preprocessor::Preprocessor(std::shared_ptr<clang::PreprocessorOptions>, clang::DiagnosticsEngine&, clang::LangOptions&, clang::SourceManager&, clang::HeaderSearch&, clang::ModuleLoader&, clang::IdentifierInfoLookup*, bool, clang::TranslationUnitKind)
clang::CompilerInstance::createPreprocessor(clang::TranslationUnitKind)
clang::FrontendAction::BeginSourceFile(clang::CompilerInstance&, clang::FrontendInputFile const&)
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*)
clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>)
clang::tooling::ToolInvocation::run()
clang::tooling::ClangTool::run(clang::tooling::ToolAction*)
MyFetcher::fetchWithProgress()
main
__libc_start_main
_start
Allocated by thread T0 here:
malloc
llvm::safe_malloc(unsigned long)
llvm::MallocAllocator::Allocate(unsigned long, unsigned long)
llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::StartNewSlab()
llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::Allocate(unsigned long, llvm::Align)
llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::Allocate(unsigned long, unsigned long)
llvm::StringMapEntry<clang::IdentifierInfo*>* llvm::StringMapEntry<clang::IdentifierInfo*>::Create<llvm::BumpPtrAllocatorImpl, clang::IdentifierInfo*>(llvm::StringRef, llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>&, clang::IdentifierInfo*&&)
std::pair<llvm::StringMapIterator, bool> llvm::StringMap<clang::IdentifierInfo*, llvm::BumpPtrAllocatorImpl>::try_emplace<clang::IdentifierInfo*>(llvm::StringRef, clang::IdentifierInfo*&&)
llvm::StringMap<clang::IdentifierInfo*, llvm::BumpPtrAllocatorImpl>::insert(std::pair<llvm::StringRef, clang::IdentifierInfo*>)
clang::IdentifierTable::get(llvm::StringRef)
clang::Preprocessor::Preprocessor(std::shared_ptr<clang::PreprocessorOptions>, clang::DiagnosticsEngine&, clang::LangOptions&, clang::SourceManager&, clang::HeaderSearch&, clang::ModuleLoader&, clang::IdentifierInfoLookup*, bool, clang::TranslationUnitKind)

代码：

#include <clang/ASTMatchers/ASTMatchFinder.h>
#include <clang/Frontend/FrontendActions.h>
#include <clang/Tooling/CommonOptionsParser.h>
#include <clang/Tooling/Tooling.h>

#include <filesystem>

class MyTypeDeclsMatchCallback : public clang::ast_matchers::MatchFinder::MatchCallback {
    using MatchFinder = clang::ast_matchers::MatchFinder;

public:
    explicit MyTypeDeclsMatchCallback() {
    }

    void run(const MatchFinder::MatchResult &Result) override {

    }
};

class MyFetcher {
    using MatchFinder = clang::ast_matchers::MatchFinder;
    using MatchCallback = clang::ast_matchers::MatchFinder::MatchCallback;

public:
    friend class MyTypeDeclsMatchCallback;

    explicit MyFetcher() {
        std::filesystem::path jsonPath = "/home/myuser/project/syntax";
        std::string errorMessage;
        compilationDatabase = clang::tooling::CompilationDatabase::autoDetectFromDirectory(jsonPath.string(), errorMessage);

        const clang::ast_matchers::DeclarationMatcher structJustDeclMatcher =
                clang::ast_matchers::recordDecl(clang::ast_matchers::isStruct())
                        .bind("struct_just_decl");

        finder.addMatcher(structJustDeclMatcher, callback.get());
    }

    void fetchWithProgress() {
        auto factory = newFrontendActionFactory(&finder, &sourceFileCallbacks);
        std::filesystem::path file = "/home/myuser/project/syntax/main.c";
        auto clangTool =
                std::make_unique<clang::tooling::ClangTool>(*compilationDatabase, file.string());
        int status = 0;
        status = clangTool->run(factory.get());
    }

private:
    std::unique_ptr<MatchCallback> callback = std::make_unique<MyTypeDeclsMatchCallback>();
    std::shared_ptr<clang::tooling::CompilationDatabase> compilationDatabase;
    clang::tooling::SourceFileCallbacks sourceFileCallbacks;
    MatchFinder finder;
};

int main() {
    MyFetcher fetcher;
    fetcher.fetchWithProgress();
}

class SourceToHeaderMatchCallback : public clang::ast_matchers::MatchFinder::MatchCallback {
    using MatchFinder = clang::ast_matchers::MatchFinder;
private:
    void renameDecl(const clang::NamedDecl *decl, const std::string &name) const;
};

void SourceToHeaderMatchCallback::renameDecl(const clang::NamedDecl *decl, const std::string &name) const {
    auto &info = decl->getASTContext().Idents.get(name);
    clang::DeclarationName wrapperDeclarationName{ &info };
    const_cast<clang::NamedDecl *>(decl)->setDeclName(wrapperDeclarationName);
}

Clang 版本：10.0.0

为什么会发生此错误？

llvm 跟踪器中的错误已创建：https ://bugs.llvm.org/show_bug.cgi?id=50567

4

0 回答 0