Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/cmd/auxclog.c b/src/cmd/auxclog.c
index 83d27d4..fd14a41 100644
--- a/src/cmd/auxclog.c
+++ b/src/cmd/auxclog.c
@@ -56,7 +56,7 @@
 				fd = openlog(argv[2]);
 				fprint(fd, "%s: %s\n", t, p);
 			}
-		} else if(Blinelen(&in) == 0)	// true eof
+		} else if(Blinelen(&in) == 0)	/* true eof */
 			break;
 		else {
 			Bread(&in, buf, sizeof buf);