Review the Qt classes in terms of reentrancy / thread-safety

Qt documentation assume, that if a class isn't marked explicitly as thread-safe / reentrant the user can't assume it is. However, in fact Qt docs for many classes don't mark them as e.g. reentrant, while they are reentrant in fact. Examples of classes that miss the reentrancy marker:

QLocalServer
QLocalSocket
QEventLoop
QThread
QTimer (only selected static methods are marked reentrant, but the whole class seems reentrant too)
QPlainTextDocumentLayout (as its direct superclass QAbstractTextDocumentLayout is marked as reentrant)

Most probably there are more.