[Boost-bugs] [Boost C++ Libraries] #10510: boost::uuids::uuid comparison error when used as key in std::map

Subject: [Boost-bugs] [Boost C++ Libraries] #10510: boost::uuids::uuid comparison error when used as key in std::map
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-09-17 11:37:03

#10510: boost::uuids::uuid comparison error when used as key in std::map
------------------------------+-------------------------
 Reporter:  cosmin.szanto@…   |      Owner:  atompkins
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  uuid
  Version:  Boost 1.56.0      |   Severity:  Showstopper
 Keywords:                    |
------------------------------+-------------------------
 When using two almost equal uuids (e.g. the last character differs), ''a''
 as a key of a std::map and ''b'' as parameter for the '''find''' function,
 the function will return that elements ''b'' is found in the map.

 A simple test to reproduce the bug:
 {{{#!c++
 #include <map>
 #include <iostream>

 #include <boost/uuid/uuid.hpp>
 #include <boost/uuid/string_generator.hpp>

 int main() {
   boost::uuids::string_generator gen;
   boost::uuids::uuid a =
 gen(std::string("145cfc95-8050-455a-8382-44ca57c1483b"));
   boost::uuids::uuid b =
 gen(std::string("145cfc95-8050-455a-8382-44ca57c1483c"));

   std::map<boost::uuids::uuid, int> elements;
   // Adding element 'a'
   elements.insert(std::make_pair(a, 1));
   // Element 'b' is found although is not added.
   std::cout << ((elements.find(b) != elements.end()) ? "Found." : "Not
 found.") << std::endl;
   return 0;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10510>
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