[Boost-bugs] [Boost C++ Libraries] #9518: string_ref::rfind return value offset

Subject: [Boost-bugs] [Boost C++ Libraries] #9518: string_ref::rfind return value offset
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-12-23 00:50:37

#9518: string_ref::rfind return value offset
------------------------------------+---------------------------
 Reporter:  Peter A. Bigot <pab@…>  |      Owner:  no-maintainer
     Type:  Bugs                    |     Status:  new
Milestone:  To Be Determined        |  Component:  utility
  Version:  Boost 1.55.0            |   Severity:  Problem
 Keywords:                          |
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 The value returned from basic_string_ref::rfind() is calculated based on
 the where the end of the target string was found, but is not adjusted for
 the length of that string.

 E.g, given
 {{{
     const char pstr[] = "abcdabc\0abcd";
     string_view sv(pstr, sizeof(pstr)-1);
     const char * pabc = "abc";
     string_view svabc(pabc);

     string_ref::size_type rv = sv.rfind(svabc);
 }}}

 ``rv`` will have the value 10 (referencing the last 'c') instead of 8
 (referencing the 'a' that starts the match).

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9518>
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