int nto_in_dynsym_resolve_code (CORE_ADDR pc);
-char *nto_extra_thread_info (struct target_ops *self, struct thread_info *);
+const char *nto_extra_thread_info (struct target_ops *self, struct thread_info *);
LONGEST nto_read_auxv_from_initial_stack (CORE_ADDR inital_stack,
gdb_byte *readbuf,