X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=util.h;fp=util.h;h=eddb06db3f57667ca1a9506db6076726110c73e7;hb=7dae56bc17f51e875b436ec63e035be12c4a6fcf;hp=506a6e2f6f6619c0d86dc44c86e653be59cbd809;hpb=7a6c23bac7ef5f32da64edbb69edc0192bf9e637;p=secnet.git

diff --git a/util.h b/util.h
index 506a6e2..eddb06d 100644
--- 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    * or until defmsg is no longer valid                                ZM */