| st[r0 -- mkfs(class, ty0, fieldvar) '] = refval(r2), r ∈ refs, validrefs(str, r2 ' + refs, ty0, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r0 -- _type] .type .class), st[r0 -- _type] .type ≤ ty, is_obj(str, r0, st), ∀ r1, str0, ty1, st0. (r1 = r2 ∨ r1 ∈ refs) ∧ validrefs(str0, r2 ' + refs, ty1, st0) → r1 = jvmref ∨ is_valid_ref(str0, r1, st0) ⊦ r = r2, r = jvmref, r = r0, r0 = jvmref, is_valid_ref(str, r, st) |
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r, str, ty0, st)]]