qt - 安静的 clang

Question

我有一个通过 cmake 使用 clang-tidy 的构建:

set_target_properties(project
    PROPERTIES
    ...
    CXX_CLANG_TIDY
        "/usr/bin/clang-tidy"
        "-checks=modernize-*,readability-*,performance-*"
        "-fix"
)

在构建它时，我在 Qt 库中发现了可能的内存泄漏:

/opt/Qt5.7.0/5.7/gcc_64/include/QtCore/qobject.h:242:16: warning: Potential memory leak [clang-analyzer-cplusplus.NewDeleteLeaks]
        return connectImpl(sender, reinterpret_cast<void **>(&signal),
               ^
.../a.cpp:27:5: note: Taking false branch
    if (not inputQFile.makeAbsolute()) {
    ^
.../a.cpp:33:5: note: Calling 'QObject::connect'
    connect(this, static_cast<void (QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished),
    ^
/opt/Qt5.7.0/5.7/gcc_64/include/QtCore/qobject.h:238:13: note: Left side of '||' is false
        if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
            ^
/opt/Qt5.7.0/5.7/gcc_64/include/QtCore/qobject.h:238:9: note: Taking false branch
        if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
        ^
/opt/Qt5.7.0/5.7/gcc_64/include/QtCore/qobject.h:242:16: note: Potential memory leak
        return connectImpl(sender, reinterpret_cast<void **>(&signal),
               ^

我怎样才能让这个安静下来？

我已经尝试过的:

添加 // NOLINT到 a.cpp:33 的结尾 -> 无效

添加 // NOLINT到 qobject.h:242 的末尾 -> 无效

将 qobject.h:242 包裹在 #ifndef __clang_analyzer__ 中-> 无效

将所有 qobject.h 包裹在 #ifndef __clang_analyzer__ 中-> 无效

添加 // NOLINT到 connectImpl -> clang-tidy 崩溃的所有行

@塔罗德:
这是我目前拥有的:

#ifndef __clang_analyzer__
        return connectImpl(sender, reinterpret_cast<void **>(&signal),
                           receiver, reinterpret_cast<void **>(&slot),
                           new QtPrivate::QSlotObject<Func2, typename QtPrivate::List_Left<typename SignalType::Arguments, SlotType::ArgumentCount>::Value, // NOLINT
                                           typename SignalType::ReturnType>(slot),
                            type, types, &SignalType::Object::staticMetaObject); // NOLINT
#endif //__clang_analyzer__

Answer 1

我认为您必须评论所有 5 行 connectImpl() 或自 // NOLINT 以来的类似内容仅影响单个代码行。 (1)