((%make-void-port "w") port (? integer?))
((open-input-string "hello") port (? integer?))
((lambda () #t) program _)
+ ((make-variable 'foo) variable _)
((make-weak-vector 3 #t) weak-vector _)
((make-weak-key-hash-table) weak-table _)
((make-weak-value-hash-table) weak-table _)