michael@0: f = eval("\
michael@0:     (function() {\
michael@0:         for each(l in[0,0]) {\
michael@0:             with(gc()>[this for(x in[function(){}])]) {\
michael@0:                 var a;\
michael@0:                 yield\
michael@0:             }\
michael@0:         }\
michael@0:     })\
michael@0: ")
michael@0: for (i in f()) {}