Note: the standard doesn't define a named requirement with this name. This is a type category defined by the core language. It is included here as a named requirement only for consistency.
Requirements
The following types are collectively called
implicit-lifetime types
:
Notes
Certain operations may
implicitly create
and start the
lifetime
of objects of implicit-lifetime types, if doing so would prevent
undefined behavior
. However, such operations do not start the lifetimes of subobjects of such objects that are not themselves of implicit-lifetime types.
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
|
DR
|
Applied to
|
Behavior as published
|
Correct behavior
|
|
CWG 2489
|
C++20
|
an operation that begins the lifetime of a
char
array implicitly creates objects
|
it does not
|