Proposed resolution:

This wording is relative to N4618.

1. Edit [string.capacity] as indicated:

   void shrink_to_fit();
   

   […]

   -15- Remarks: Reallocation invalidates all the references, pointers, and iterators referring to the elements in the sequence as well as the past-the-end iterator. If no reallocation happens, they remain valid.

2. Edit [deque.capacity] as indicated:

   void shrink_to_fit();
   

   […]

   -8- Remarks: shrink_to_fit invalidates all the references, pointers, and iterators referring to the elements in the sequence as well as the past-the-end iterator.

3. Edit [vector.capacity] as indicated:

   void shrink_to_fit();
   

   […]

   -10- Remarks: Reallocation invalidates all the references, pointers, and iterators referring to the elements in the sequence as well as the past-the-end iterator. If no reallocation happens, they remain valid.

[ 2017-01-27 Telecon ]

Priority 0

The resolution of LWG 2223 added the wording "Reallocation invalidates all the references, pointers, and iterators referring to the elements in the sequence." to a number of shrink_to_fit operations.

This seems to be missing any mention of end iterators. Surely end iterators are invalidated, too?

Suggested resolution:

For string, deque, and vector each, append as follows:

Reallocation invalidates all the references, pointers, and iterators referring to the elements in the sequence as well as the past-the-end iterator.