var runtime.sliceType 2 uses runtime (current package) iface.go#L309: sliceType *_type = efaceOf(&sliceEface)._type iface.go#L403: x = mallocgc(unsafe.Sizeof(val), sliceType, true)
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)