Name: rlT66838 Date: 08/19/99
It has been noted in bug #4146524 that the format classes are
not thread-safe. The wisdom of this decision aside (it's bitten
a bunch of people, myself included), I have never seen any
mention of this fact in the documentation. Not being thread-safe
is a significant limitation on a class, with potentially dire
results, and not documenting the classes as such is dangerous.
(Review ID: 94152)