This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 119a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2025-12-20
According to 11.4.5.3 [class.copy.ctor] paragraph 11, the last bullet,a defaulted move constructor for a class is defined as deleted if
a non-static data member or direct or virtual base class with a typethat does not have a move constructor and is not trivially copyable.
This means that an example like
struct S { S(); int &&r; } s{S()};is ill-formed. This is probably not intended.
(Note that the February, 2012 proposed resolution forissue 1402 also makes this exampleill-formed, because the move constructor is not declared and thecopy constructor is defined as deleted because of the rvalue-referencemember.)
Additional note, February, 2014:
This issue is resolved by the resolution ofissue 1402, which removed the problematicsentence.