[clazy] [Bug 398633] New: Feature request add tests for qt containers and qobjects

[Mike Harris]

https://bugs.kde.org/show_bug.cgi?id=398633

            Bug ID: 398633
           Summary: Feature request add tests for qt containers and
                    qobjects
           Product: clazy
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: mike.a.harris at outlook.com
                CC: smartins at kde.org
  Target Milestone: ---

I have a very simple example that refuses to be flagged by either clang,
clang-tidy, clazy, or Krazy2.

QVector<int> myVec;
myVec.push_back(1);
myVec.push_back(2);
int third = myVec.at(3);
int otherThird =myVec[3];
obviously this segfaults because there was never a third element.

The issue is that no single IDE or plugin will flag this. It'll ASSERT in Qt
Creator debug build run but that's after it compiles.

there has to be some intellisense like thing in the editor or any static
analysis tool that can read Qt Containers.

"Just add the Qt source to your code model" you might say well compiling every
single part of Qt takes many days so not an option.

Another example is

QCheckBox *myCheckbox = new QCheckBox();
QListView *myListView = qobject_cast<QListView *>(myCheckBox); //will  equal
null
QSize size = myListView->gridSize(); //myListView is null so crashes with
segfault again

This leads to deep bugs that aren't flagged with any static analysis tool.

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