C++ out-of-line default-defined special member functions not recognized

When the user writes an out-of-line default definition of a special member function, Qt Creator underlines it in red and upon mouseover displays "unexpected token `default'". This syntax is, however, valid C++11 code and compiles when the compiler supports default definitions.

Example:

class Example
{
  Example();
};

Example::Example() = default;

The last line gets underlined.