[Boost-bugs] [Boost C++ Libraries] #11087: Converting assignment operator is too generous

Subject: [Boost-bugs] [Boost C++ Libraries] #11087: Converting assignment operator is too generous
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-03-09 08:37:52

#11087: Converting assignment operator is too generous
------------------------------+-----------------------
 Reporter:  anonymous         |      Owner:  fcacciola
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  optional
  Version:  Boost 1.57.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+-----------------------
 This has been reported by Karol Nowacki. The following program compiles
 although it shoudl not.

 {{{
 #include <boost/optional.hpp>

 enum E1 {e1};
 enum E2 {e2};

 int main()
 {
   boost::optional<E2> o2(e2);
   boost::optional<E1> o1;
   o1 = o2; // SHOULD NOT WORK
 }
 }}}

 It should not compile given that the following do not compile:



 {{{
 E1 v1 = e2; // FAILS
 E1 v1_;
 v1_ = e2;   // FAILS
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11087>
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