util: priomsg: Allow passing priomsg_update_p a null pm

[secnet.git] / util.h

diff --git a/util.h b/util.h
index 506a6e2f6f6619c0d86dc44c86e653be59cbd809..eddb06db3f57667ca1a9506db6076726110c73e7 100644 (file)
--- a/util.h
+++ b/util.h
@@ -75,7 +75,8 @@ void priomsg_destroy(struct priomsg *pm, int32_t maxlen);     /* FZM -> F */
 void priomsg_reset(struct priomsg *pm);                       /* FZM -> Z */
 bool_t priomsg_update_p(struct priomsg *pm, int prio);         /* ZM -> M */
   /* returns true iff message of priority prio ought to be added,
-   * caller should then call truncmsg_add_*. */
+   * caller should then call truncmsg_add_*.
+   * pm may be NULL, in which case it just returns false */
 const char *priomsg_getmessage(const struct priomsg *pm, const char *defmsg);
   /* return value is null-terminated, valid until next call
    * or until defmsg is no longer valid                                ZM */