diff -BbupN --recursive circle30bpl13/ChangeLog circle30bpl13a/ChangeLog
--- circle30bpl13/ChangeLog	Wed May 27 16:46:19 1998
+++ circle30bpl13a/ChangeLog	Thu Jun  4 10:16:26 1998
@@ -1,6 +1,8 @@
 
 Release history:
 
+Version 3.00 beta pl13 release: June 1, 1998
+Version 3.00 beta pl12 release: October 29, 1997
 Version 3.00 beta pl12 release: October 29, 1997
 Version 3.00 beta pl11 release: April 14, 1996
 Version 3.00 beta pl10 release: March 11, 1996
@@ -1705,3 +1707,11 @@ change.
 5/27/98
 
 -- gg - act.wizard.c: do_set(): Added 'age' to "set."
+
+6/4/98
+
+-- gg - shop.c: Extraneous log() statement was missed during sprintf()+log()
+	conversions.
+
+-- gg - comm.c: reap(): Added to take care of fork() with core_dump_unix().
+
diff -BbupN --recursive circle30bpl13/src/comm.c circle30bpl13a/src/comm.c
--- circle30bpl13/src/comm.c	Wed Apr  1 11:30:59 1998
+++ circle30bpl13a/src/comm.c	Wed Jun  3 19:44:32 1998
@@ -128,7 +128,9 @@ char *make_prompt(struct descriptor_data
 void check_idle_passwords(void);
 void heartbeat(int pulse);
 int set_sendbuf(socket_t s);
-
+#if defined(POSIX)
+sigfunc *my_signal(int signo, sigfunc * func);
+#endif
 
 /* extern fcnts */
 void reboot_wizlists(void);
@@ -1653,6 +1655,14 @@ RETSIGTYPE unrestrict_game(int sig)
 
 #ifdef CIRCLE_UNIX
 
+/* clean up our zombie kids to avoid defunct processes */
+RETSIGTYPE reap(int sig)
+{
+  while (waitpid(-1, NULL, WNOHANG) > 0);
+
+  my_signal(SIGCHLD, reap);
+}
+
 RETSIGTYPE checkpointing(int sig)
 {
   if (!tics) {
@@ -1734,6 +1744,7 @@ void signal_setup(void)
 
   /* just to be on the safe side: */
   my_signal(SIGHUP, hupsig);
+  my_signal(SIGCHLD, reap);
 #endif /* CIRCLE_MACINTOSH */
   my_signal(SIGINT, hupsig);
   my_signal(SIGTERM, hupsig);
diff -BbupN --recursive circle30bpl13/src/shop.c circle30bpl13a/src/shop.c
--- circle30bpl13/src/shop.c	Mon Mar 30 23:41:43 1998
+++ circle30bpl13a/src/shop.c	Thu Jun  4 10:16:38 1998
@@ -569,7 +569,6 @@ struct obj_data *get_selling_obj(struct 
   default:
     log("SYSERR: Illegal return value of %d from trade_with() (%s)",
 	    result, __FILE__);	/* Someone might rename it... */
-    log(buf);
     sprintf(buf, "%s An error has occurred.", GET_NAME(ch));
     break;
   }
diff -BbupN --recursive circle30bpl13/src/utils.h circle30bpl13a/src/utils.h
--- circle30bpl13/src/utils.h	Thu May 21 01:40:54 1998
+++ circle30bpl13a/src/utils.h	Thu Jun  4 21:51:24 1998
@@ -173,7 +173,7 @@ void	update_pos(struct char_data *victim
 
 /* Subtle bug, but works well for now. */
 #define CHECK_PLAYER_SPECIAL(ch, var) \
-	(((ch)->player_specials == &dummy_mob) ? (log("SYSERR: Mob using '"#var"' at %s:%d.", __FILE__, __LINE__), (var)) : (var))
+	(*(((ch)->player_specials == &dummy_mob) ? (log("SYSERR: Mob using '"#var"' at %s:%d.", __FILE__, __LINE__), &(var)) : &(var)))
 
 #define MOB_FLAGS(ch) ((ch)->char_specials.saved.act)
 #define PLR_FLAGS(ch) ((ch)->char_specials.saved.act)
@@ -292,7 +292,7 @@ void	update_pos(struct char_data *victim
 #define GET_LAST_TELL(ch)	CHECK_PLAYER_SPECIAL((ch), ((ch)->player_specials->last_tell))
 
 #define GET_SKILL(ch, i)	CHECK_PLAYER_SPECIAL((ch), ((ch)->player_specials->saved.skills[i]))
-#define SET_SKILL(ch, i, pct)	do { CHECK_PLAYER_SPECIAL((ch), (ch)->player_specials->saved.skills[i] = pct); } while(0)
+#define SET_SKILL(ch, i, pct)	do { CHECK_PLAYER_SPECIAL((ch), (ch)->player_specials->saved.skills[i]) = pct; } while(0)
 
 #define GET_EQ(ch, i)		((ch)->equipment[i])