Rule 3-4-1 and classes

[drstaiger]

The rule's title includes "types", but the body of the rule does not specify further whether this is meant for typedefs only, or for complex classes as well.
For example, a class only used in a single function: should it be moved into the function? That would work against the typical ideas of short functions and separation of responsibilities. Could you please clarify MISRA's intention here?

[misra cpp]

As currently stated you are correct, a class only used in a single function should be declared in that function.

However, you are also right that this may be undesirable. This will be reviewed for a future version