CODEWITHSUNDEEP
c++c++11function-declarationnoexcept
ABu
ABu

Reputation: 12299

C++11, `noexcept` specifier, definition versus declaration

If a declared function has a noexcept specificator (noexcept, noexcept(true), noexcept(false), or any other noexcept(expr) which evaluates to true or false), but it's defined in another place, do I need to specify the noexcept specifier in the definition again, or only in its forward declaration?

Upvotes: 23

Views: 3760

Answers (1)

T.C.
T.C.

Reputation: 137425

[except.spec]/p4:

If any declaration of a function has an exception-specification that is not a noexcept-specification allowing all exceptions, all declarations, including the definition and any explicit specialization, of that function shall have a compatible exception-specification.

noexcept(some-constant-expression-that-evaluates-to-false) may be omitted. Anything else must be present in all declarations.

Upvotes: 24

Related Questions