[Boost-bugs] [Boost C++ Libraries] #5167: Allow proto::extends default ctor to leave the proto_expr_ member uninitialized

Subject: [Boost-bugs] [Boost C++ Libraries] #5167: Allow proto::extends default ctor to leave the proto_expr_ member uninitialized
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-02-07 19:35:24

#5167: Allow proto::extends default ctor to leave the proto_expr_ member
uninitialized
-------------------------------------------------+--------------------------
 Reporter:  antoine.de-maricourt@…               |       Owner:  eric_niebler
     Type:  Bugs                                 |      Status:  new         
Milestone:  To Be Determined                     |   Component:  proto       
  Version:  Boost 1.46.0                         |    Severity:  Optimization
 Keywords:  proto, extends, default constructor  |  
-------------------------------------------------+--------------------------
 Proposal:

 turn default ctor for proto::extends in proto/extends.hpp
 from:

 {{{
 extends(): proto_expr_(){}
 }}}

 to:

 {{{
  extends() { }
 }}}


 Rational:
 It is up to the derived class to decide if expr can be left in undefined
 state (and to control it), and not to the extends base class.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5167>
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