[Bug libstdc++/47433] libstdc++ parallel mode calls std::swap explicitely

[singler at kit dot edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47433

--- Comment #6 from Johannes Singler <singler at kit dot edu> 2011-01-24 13:23:26 UTC ---
Taking __key as value type in (some variants of __delete_min_insert) makes
sense, since it is also used as a buffer for storing the current loser.  Having
a local variable that is initialized with the const ref would have the same
effect, would it not?

Johannes