Let ba2str() handle unitialized map just like ba2long() does.

diff --git a/usr.sbin/btrace/btrace.c b/usr.sbin/btrace/btrace.c
index a84ab5c..371ddf6 100644 (file)
--- a/usr.sbin/btrace/btrace.c
+++ b/usr.sbin/btrace/btrace.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: btrace.c,v 1.54 2021/09/09 09:53:11 mpi Exp $ */
+/*     $OpenBSD: btrace.c,v 1.55 2021/09/09 11:20:40 mpi Exp $ */
 
 /*
  * Copyright (c) 2019 - 2021 Martin Pieuchot <mpi@openbsd.org>
@@ -1388,6 +1388,11 @@ ba2str(struct bt_arg *ba, struct dt_evt *dtev)
                break;
        case B_AT_MAP:
                bv = ba->ba_value;
+               /* Unitialized map */
+               if (bv->bv_value == NULL) {
+                       str = buf;
+                       break;
+               }
                str = ba2str(map_get((struct map *)bv->bv_value,
                    ba2str(ba->ba_key, dtev)), dtev);
                break;