rustc: Make region dereference no longer require an unsafe block

Author: pcwalton

src/rustc/middle/typeck.rs

@@ -2337,13 +2337,7 @@ fn check_expr_with_unifier(fcx: @fn_ctxt, expr: @ast::expr, unify: unifier,
                 oper_t = inner.ty;
                 require_unsafe(tcx.sess, fcx.purity, expr.span);
               }
-              ty::ty_rptr(_, inner) {
-                // FIXME: This shouldn't be unsafe for now, but we enforce it
-                // for now to safeguard the language until we're properly
-                // typechecking regions.
-                oper_t = inner.ty;
-                require_unsafe(tcx.sess, fcx.purity, expr.span);
-              }
+              ty::ty_rptr(_, inner) { oper_t = inner.ty; }
               _ {
                   tcx.sess.span_err(expr.span,
                       #fmt("Type %s cannot be dereferenced",