[Boost-users] [Filesystem] is_directory( ) for a non-existent path.

This is probably something of a shot in the dark, but somewhere between 1.33.1 and 1.37 the behaviour of is_directory() for a non-existent directory changed from failing (or throwing) in 1.33.1 to simply returning false (1.37). Can anyone enlighten me when this was. Trac references would be lovely. Thx - Rob.