Require Export VST.veric.mapsto_memory_block.
Local Open Scope pred.

Lemma mapsto_unsigned_signed:
forall sign1 sign2 sh sz v i,
mapsto sh (Tint sz sign1 noattr) v (Vint (Cop.cast_int_int sz sign1 i)) =
mapsto sh (Tint sz sign2 noattr) v (Vint (Cop.cast_int_int sz sign2 i)).