6 Basics [basic]

6.7 Memory and objects [basic.memobj]

6.7.5 Storage duration [basic.stc] General [basic.stc.general]

The storage duration is the property of an object that defines the minimum potential lifetime of the storage containing the object.
The storage duration is determined by the construct used to create the object and is one of the following:
  • static storage duration
  • thread storage duration
  • automatic storage duration
  • dynamic storage duration
[Note 1: 
After the duration of a region of storage has ended, the use of pointers to that region of storage is limited ([basic.compound]).
— end note]
Static, thread, and automatic storage durations are associated with objects introduced by declarations ([basic.def]) and with temporary objects ([class.temporary]).
The dynamic storage duration is associated with objects created by a new-expression ([expr.new]) or with implicitly created objects ([intro.object]).
The storage duration categories apply to references as well.