[defns.required.behavior] (original) (raw)

3 Terms and definitions [intro.defs]

3.48[defns.required.behavior]required behavior

⟨library⟩description of replacement function ([defns.replacement]) and handler function ([defns.handler]) semantics applicable to both the behavior provided by the implementation and the behavior of any such function definition in the program

[Note 1:

If such a function defined in a C++ program fails to meet the required behavior when it executes, the behavior is undefined.

— _end note_]