[Bug c++/60096] c++11 lambda reference capture mistake

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60096

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This looks invalid to me, you return a closure that holds a dangling reference
to a function parameter that has gone out of scope.