[ET Trac] [Einstein Toolkit] #1521: Piraha smart_ptr can't handle self assignment

[Einstein Toolkit]

#1521: Piraha smart_ptr can't handle self assignment
----------------------+-----------------------------------------------------
 Reporter:  eschnett  |       Owner:                     
     Type:  defect    |      Status:  new                
 Priority:  major     |   Milestone:                     
Component:  Cactus    |     Version:  development version
 Keywords:            |  
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 An assignment of the form
 {{{
 void foo(smart_ptr<T> x) {
   x = x;
 }
 }}}
 will not work, since operator= assumes that LHS and RHS are different
 objects. The usual remedy is to add an if statement, doing nothing for
 self assignment.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1521>
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