This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 115d. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-10-26
[Adopted at the February, 2016 meeting.]
The adoption of document N3922 at the November, 2014 meeting introduces a new incompatibility that should be documented in Annex Clause Annex C [diff]:
int x1 = 1; auto x2{x1}; // Is now int before was std::initializer<int>
Proposed resolution (September, 2015):
Insert the following as a new section following C.4.2 [diff.cpp14.lex]:
C.4.2 Clause 7: Declarations
[diff.cpp14.dcl]
9.2.9.7 [dcl.spec.auto]
Change: auto deduction from braced-init-list
Rationale: More intuitive deduction behavior
Effect on original feature: Valid C++14 code may fail to compile or may change meaning in this International Standard. For example:auto x1{1}; // Was std::initializer_list<int>, now int auto x2{1, 2}; // Was std::initializer_list<int>, now ill-formed