http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55166



Jonathan Wakely <redi at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |RESOLVED

         Resolution|                            |INVALID



--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-11-01 
18:40:49 UTC ---

The standard says that after the move t1 will be in a valid but unspecified

state.



It does not say it will be empty.



There are performance advantages to the current behaviour because if you do

this:



std::string t0{"abc"};

std::string t1{"123"};

t0 = std::move(t1);

t1 = "xyz";



there is no allocation for the last line, because it already has memory



You keep reporting invalid bugs which are actually correct C++11 behaviour.

Please find somewhere else to learn C++, such as stackoverflow.com

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