break
			}
			// Invent new Name for the two-result function.
			n := f.Name["2"+r.Name.Go]
			if n == nil {
				n = new(Name)
				*n = *r.Name
				n.AddError = true
				n.Mangle = "_C2func_" + n.Go
				f.Name["2"+r.Name.Go] = n
			}
			expr = getNewIdent(n.Mangle)
			r.Name = n
			break
		}
	case ctxExpr:
		switch r.Name.Kind {