D.6 [depr.impldec] indicates that use of the postfix ++ with a bool operand is deprecated. Annex Clause Annex D [depr] says nothing about prefix ++. However, this use of prefix ++ is also deprecated, according to 7.6.2.3 [expr.pre.incr] paragraph 1. Presumably D.6 [depr.impldec] should be expanded to cover prefix ++, or another section should be added to Annex Clause Annex D [depr].