The text provided in [re.tokiter.cnstr]-28.12.2.1/2+3 describes
the effects of the three non-default constructors of class
template regex_token_iterator but is does not clarify which values
are legal values for submatch/submatches. This becomes
an issue, if one takes 28.12.2/9 into account, which explains
the notion of a "current match" by saying:

"The current match is (*position).prefix() if subs[N] == -1, or
(*position)[subs[N]] for any other value of subs[N]."

It's not clear to me, whether other negative values except -1
are legal arguments or not - it seems they are not.

Proposed resolution:

Add the following precondition paragraph just before the current
28.12.2.1/2:

"Requires: Each of the initialization values of subs must be >= -1."

Greetings from Bremen,

Daniel Kr   gler


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On Mon,  5 Mar 2007 13:22:37 CST, Daniel Kr=FCgler wrote *yet another*
defect report:

Guys, just let me say that if these reports are all correct then
Daniel definitely deserves a free copy of the standard signed by a
committee member of his choice :-)

--=20
Genny.

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