[Q] UB query

[Tim Rentsch]

Do you have a reference? A DR that modifies what seems to be the
clear wording of standard, it usually ends with an edit to the wording
which should be reflected in the drafts. I don't understand the
process that well, so I may have got this wrong. The text of the DR
would help.

*dredge, dredge* The DR is 338. I'm half-right, half-wrong --
this case was addressed, but for C1X, not C99. The language
that covers it can be seen in N1401, at the end of 6.3.2.1 p 2
(the last sentence, marked with a change bar).