Both the class definition of regex_token_iterator
([re.tokiter]-28.12.2/6)
and the latter member specifications ([re.tokiter.comp]-28.12.2.2/1+2)
declare both comparison operators as non-const functions.
Furtheron, both dereference operators are unexpectedly also
declared as non-const in 28.12.2/6 as well as in
([re.tokiter.deref]-28.12.2.3/1+2).

Proposed resolution:

1) In (28.12.2/6) change the current declarations

bool operator==(const regex_token_iterator&);
bool operator!=(const regex_token_iterator&);
const value_type& operator*();
const value_type* operator->();

to

bool operator==(const regex_token_iterator&) const;
bool operator!=(const regex_token_iterator&) const;
const value_type& operator*() const;
const value_type* operator->() const;

2) In 28.12.2.2 change the following declarations

bool operator==(const regex_token_iterator& right);
bool operator!=(const regex_token_iterator& right);

to

bool operator==(const regex_token_iterator& right) const;
bool operator!=(const regex_token_iterator& right) const;

3) In 28.12.2.3 change the following declarations

const value_type& operator*();
const value_type* operator->();

to

const value_type& operator*() const;
const value_type* operator->() const;

Greetings from Bremen,

Daniel Kr   gler


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