Qt Creator highlights lots of valid C++ as invalid

Creator seems to highlight lots of valid c++ as invalid.

Examples:

creating function pointers:

void foo() {
AttemptResult (QMailStorePrivate::func)(QMailMessage, const QString&, const QStringList&, QMailMessageIdList*, QMailMessageIdList*, QMailFolderIdList*, QMailAccountIdList*, Transaction&, bool) = &QMailStorePrivate::attemptAddMessage;
}

..and even normal pointers:
void foo(sqlite3_stmt *statement)

{ const unsigned char *s(sqlite3_column_text(statement, 0)); }

Namespace aliases...

namespace pt = boost::posix_time;
void foo(pt:ptime p); // but writing: "void foo(boost::posix_time::ptime p);" would be fine

etc.