michael@0: /* Avoid use-after-free while sweeping type objects. */
michael@0: 
michael@0: try {
michael@0:   Reflparse("")
michael@0: } catch(e) {}
michael@0: Reflect.parse("for(var a;a;j){if(a%2==0){c()}}")
michael@0: try {
michael@0:   (function() {
michael@0:     for (a = 0;; j) {
michael@0:       gc()
michael@0:     }
michael@0:   })()
michael@0: } catch(e) {
michael@0:   delete this.Math
michael@0: }
michael@0: gc()
michael@0: Reflect.parse("let(x){}")
michael@0: gc()