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Section: 31.7.7 [std.manip], 31.7.8 [ext.manip], 31.7.9 [quoted.manip] Status: New Submitter: Jonathan Wakely Opened: 2023-05-25 Last modified: 2023-06-01
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All the manipulators in 31.7.7 [std.manip] and 31.7.8 [ext.manip] use language of the form:
An object of unspecified type such that if
outis an object of type
basic_ostream<charT, traits>then the expression
out << resetiosflags(mask)behaves as if [...]
This needs to work for any object with a public and unambiguous base class
basic_ostream<charT, traits>, not only objects
of exactly that type.
In C++98 and C++03,
setfill did actually get this right
out is (or is derived from)
but that was "fixed" for C++11 to be consistent with the other manipulators.
31.7.9 [quoted.manip] is slightly different, talking about
"an instance of
basic_ostream", but that's not right either.
[2023-06-01; Reflector poll]
Set priority to 3 after reflector poll.