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16 changes: 8 additions & 8 deletions CppCoreGuidelines.md
Original file line number Diff line number Diff line change
Expand Up @@ -16129,17 +16129,17 @@ The standard library assumes that destructors, deallocation functions (e.g., `op

##### Note

- Deallocation functions, including `operator delete`, must be `noexcept`.
- `swap` functions must be `noexcept`.
- Most destructors are implicitly `noexcept` by default.
- Also, [make move operations `noexcept`](#Rc-move-noexcept).
- If writing a type intended to be used as an exception type, ensure its copy constructor is not `noexcept`. In general we cannot mechanically enforce this, because we do not know whether a type is intended to be used as an exception type.
- Try not to `throw` a type whose copy constructor is not `noexcept`. In general we cannot mechanically enforce this, because even `throw std::string(...)` could throw but does not in practice.
* Deallocation functions, including `operator delete`, must be `noexcept`.
* `swap` functions must be `noexcept`.
* Most destructors are implicitly `noexcept` by default.
* Also, [make move operations `noexcept`](#Rc-move-noexcept).
* If writing a type intended to be used as an exception type, ensure its copy constructor is not `noexcept`. In general we cannot mechanically enforce this, because we do not know whether a type is intended to be used as an exception type.
* Try not to `throw` a type whose copy constructor is not `noexcept`. In general we cannot mechanically enforce this, because even `throw std::string(...)` could throw but does not in practice.

##### Enforcement

- Catch destructors, deallocation operations, and `swap`s that `throw`.
- Catch such operations that are not `noexcept`.
* Catch destructors, deallocation operations, and `swap`s that `throw`.
* Catch such operations that are not `noexcept`.

**See also**: [discussion](#Sd-never-fail)

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