End CONSTRUCTORS.
(** * Basic preservation invariants *)
Section CORRECTNESS.
Variable prog: Clight.program.
Variable tprog: Csharpminor.program.
Hypothesis TRANSL: transl_program prog = OK tprog.
Let ge : Clight.genv := Genv.globalenv prog.
Let tge : Csharpminor.genv := Genv.globalenv tprog.

Lemma symbols_preserved:
forall s, Genv.find_symbol tge s = Genv.find_symbol ge s.