On 2 November 2011 00:53, Jonathan Wakely wrote: > The first is that packaged_task's template constructors should > be restricted to prevent them from being chosen to copy a > packaged_task object
While submitting that issue to the LWG chair I realised the constraint should use decay<Fn> instead of remove_reference<Fn> so that it also removes cv qualifiers. I'll fix that tomorrow.