[Bug libstdc++/51183] pair piecewise_construct_t constructor copies

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51183

--- Comment #15 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-06 
10:31:30 UTC ---
Created attachment 26005
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26005
Tested patch