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Specifies that a type is a standard layout type. Standard layout types are useful for communicating with code written in other programming languages.
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.
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The following types are collectively calledstandard-layout types:
SeeStandard-layout.
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| CWG 1672 | C++11 | first non-static data member rule ignored existence of empty base classes | first non-static data member rule made recursive |
| CWG 1813 | C++11 | class with a member defined in an indirect base wasn't technically standard-layout | all member declarations must be in the same class |
| CWG 2120 | C++11 | array as first member wasn't considered when comparing the first element type with type of a base | array members are considered |
(C++11) | checks if a type is astandard-layout type (class template)[edit] |
