/* Function to invoke get the next symbol. Return the symbol name. */
-EXTERN char *(*next_symbol_text_func) (struct objfile *);
+EXTERN const char *(*next_symbol_text_func) (struct objfile *);
extern void add_symbol_to_list (struct symbol *symbol,
struct pending **listhead);
extern void start_subfile (const char *name);
-extern void patch_subfile_names (struct subfile *subfile, char *name);
+extern void patch_subfile_names (struct subfile *subfile, const char *name);
extern void push_subfile (void);