if (!(((vVariable)symtab.get(s)).deref() instanceof vNull)) { System.err.println("\"" + s + "\": inconsistent redeclaration"); System.exit(1);
vValue val; if (!((val = ((vVariable)symtab.get(s)).deref()) instanceof vNull)) { vDescriptor bval = (vDescriptor) builtintab.get(s); if (bval == null || bval.deref() != val) { System.err.println("\"" + s + "\": inconsistent redeclaration"); System.exit(1); }
	public static void declareGlobalInit(String s, vVariable x) {		if (symtab.containsKey(s)) {			if (!(((vVariable)symtab.get(s)).deref() instanceof vNull)) {				System.err.println("\"" + s + "\": inconsistent redeclaration");				System.exit(1);			}		}		global(s,x);	}