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### 86. String constructors don't describe exceptions

Section: 21.3.3.2 [string.require] Status: TC1 Submitter: Nico Josuttis Opened: 1998-09-29 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

The constructor from a range:

    template<class InputIterator>
             basic_string(InputIterator begin, InputIterator end,
                          const Allocator& a = Allocator());

lacks a throws clause. However, I would expect that it throws according to the other constructors if the numbers of characters in the range equals npos (or exceeds max_size(), see above).

Proposed resolution:

In 21.3.3.2 [string.require], Strike throws paragraphs for constructors which say "Throws: length_error if n == npos."

Rationale:

Throws clauses for length_error if n == npos are no longer needed because they are subsumed by the general wording added by the resolution for issue 83.