Annex C (informative) Compatibility [diff]

C.4 C++ and ISO C++ 2014 [diff.cpp14]

C.4.3 [dcl.dcl]: declarations [diff.cpp14.dcl.dcl]

Affected subclause: []
Change: Removal of register storage-class-specifier.

Rationale: Enable repurposing of deprecated keyword in future revisions of this International Standard.

Effect on original feature: A valid C++ 2014 declaration utilizing the register storage-class-specifier is ill-formed in this International Standard.
The specifier can simply be removed to retain the original meaning.
Affected subclause: []
Change: auto deduction from braced-init-list.

Rationale: More intuitive deduction behavior.

Effect on original feature: Valid C++ 2014 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