[Boost-bugs] [Boost C++ Libraries] #12454: multi_array: operator= does not resize array

Subject: [Boost-bugs] [Boost C++ Libraries] #12454: multi_array: operator= does not resize array
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-09-14 11:04:57

#12454: multi_array: operator= does not resize array
------------------------------+-------------------------
 Reporter:  martin.koerner@…  |      Owner:  garcia
     Type:  Feature Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  multi_array
  Version:  Boost 1.61.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+-------------------------
 Hello,

 the copy operator does not resize the array in contrast to the copy
 constructor, which does. That is a pitfall.

 In case of a multi_array_ref the size cannot be changed, but for a
 multi_array it can and it also should change the size.

 #include <boost/multi_array.hpp>

 int main() {

   boost::multi_array<double, 2> a(boost::extents[3][4]);
   boost::multi_array<double, 2> b = a; // ok
   boost::multi_array<double, 2> c; // has size [0][0]
   c = a; // fails

   return 0;
 }

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12454>
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