`------------------------------------------------------------------*/
void
-symbol_destructor_set (symbol *sym, char *destructor, location loc)
+symbol_destructor_set (symbol *sym, const char *destructor, location loc)
{
if (destructor)
{
`---------------------------------------------------------------*/
void
-symbol_printer_set (symbol *sym, char *printer, location loc)
+symbol_printer_set (symbol *sym, const char *printer, location loc)
{
if (printer)
{