If the core cannot be determined -- either for the specified
thread, or right now, or in this debug session, or for this
target -- return -1. */
- int (*to_core_of_thread) (struct target_ops *, ptid_t ptid);
+ int (*to_core_of_thread) (struct target_ops *, ptid_t ptid)
+ TARGET_DEFAULT_RETURN (-1);
/* Verify that the memory in the [MEMADDR, MEMADDR+SIZE) range
matches the contents of [DATA,DATA+SIZE). Returns 1 if there's