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c++qtqt-creatorreinterpret-castglobal-namespace

Qt Creator IDE appears to be falsely marking reinterpret_cast<::GlobalType> as invalid

I am currently in the process of moving a number of class files from our Visual Studio source environment into Qt Creator (version 3.4.2).

I have made several changes to cater for the differences in the compiler (into MinGW). One thing that is puzzling me is that the the IDE is reporting a specific error (red underline) but still compiles fine.

I am pretty sure the issue is isolated to using reinterpret_cast<T> where T is a global namespace.

For example, the following line will show as incorrect in the IDE but will still compile:

::GetWindowThreadProcessId(window, reinterpret_cast<::LPDWORD>(&processId));

The tooltip states:

expected ';' got ':'

If I change the code to remove :: from LPDWORD the syntax highlighting disappears. This will be fine in the IDE:

::GetWindowThreadProcessId(window, reinterpret_cast<LPDWORD>(&processId));

I suspect this is a bug in the IDE. Is this a safe assumption?

I don't plan on changing the code style for using the global namespace.

Solution

  • Thanks to lisyarus's comment, I was able to find that this is in fact a bug in QT Creator. There is already a bug report here.

    As I mentioned in the question, the bug doesn't stop you from compiling the code. You can, if you wish, add a space between < and ::.