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Section: 16 [library] Status: NAD Editorial Submitter: Niels Dekker Opened: 2009-01-07 Last modified: 2016-01-28
Priority: Not Prioritized
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Discussion:
Previous versions of the Draft had a table, defining the Assignable
requirement. For example
N2134
Table 79, "Assignable requirements". But I guess the term "Assignable"
is outdated by now, because the current Committee Draft provides
MoveAssignable
, CopyAssignable
, and TriviallyCopyAssignable
concepts
instead. And as far as I can see, it no longer has a definition of
Assignable
. (Please correct me if I'm wrong.) Still the word
"Assignable" is used in eight places in the Draft,
N2800.
Are all of those instances of "Assignable
" to be replaced by "CopyAssignable
"?
[ Batavia (2009-05): ]
Move to NAD Editorial.
Proposed resolution:
Change Exception Propagation 17.9.7 [propagation]:
exception_ptr
shall beDefaultConstructible
,CopyConstructible
,CopyAssignable
andEqualityComparable
.
Change Class template reference_wrapper 22.10.6 [refwrap]:
reference_wrapper<T>
is aCopyConstructible
andCopyAssignable
wrapper around a reference to an object of typeT
.
Change Placeholders 22.10.15.5 [func.bind.place]:
It is implementation defined whether placeholder types are
CopyAssignable
.CopyAssignable
placeholders' copy assignment operators shall not throw exceptions.
Change Class template shared_ptr 20.3.2.2 [util.smartptr.shared]:
Specializations of
shared_ptr
shall beCopyConstructible
,CopyAssignable
, andLessThanComparable
...
Change Class template weak_ptr 20.3.2.3 [util.smartptr.weak]:
Specializations of
weak_ptr
shall beCopyConstructible
,CopyAssignable
, andLessThanComparable
...
Change traits typedefs 23.2.3 [char.traits.typedefs] (note: including deletion of reference to 23.1!):
Requires:
state_type
shall meet the requirements ofCopyAssignable
(23.1),CopyConstructible
(20.1.8), andDefaultConstructible
types.
Change Class seed_seq 28.5.8.1 [rand.util.seedseq] (note again: including deletion of reference to 23.1!):
In addition to the requirements set forth below, instances of
seed_seq
shall meet the requirements ofCopyConstructible
(20.1.8) and ofCopyAssignable
(23.1).
Note: The proposed resolution of this issue does not deal with the
instance of the term "Assignable" in 99 [auto.ptr], as this is dealt
with more specifically by LWG 973(i), "auto_ptr
characteristics", submitted
by Maarten Hilferink.