Annex C (informative)
Compatibility
[diff]
C.4
C++ and ISO C++ 2014
[diff.cpp14]
C.4.8
Clause
[library]
: library introduction
[diff.cpp14.library]
[namespace.future]
Change:
New reserved namespaces
.
Rationale:
Reserve namespaces for future revisions of the standard library that might otherwise be incompatible with existing programs
.
Effect on original feature:
The global namespaces
std
followed by an arbitrary sequence of digits is reserved for future standardization
.
Valid C++ 2014 code that uses such a top-level namespace, e.g.,
std2
, may be invalid in this International Standard
.