Make it possible to check for existing string in maps.

diff --git a/usr.sbin/btrace/btrace.c b/usr.sbin/btrace/btrace.c
index 4450e98..ce32989 100644 (file)
--- a/usr.sbin/btrace/btrace.c
+++ b/usr.sbin/btrace/btrace.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: btrace.c,v 1.88 2024/02/24 19:42:54 mpi Exp $ */
+/*     $OpenBSD: btrace.c,v 1.89 2024/02/27 12:38:12 mpi Exp $ */
 
 /*
  * Copyright (c) 2019 - 2023 Martin Pieuchot <mpi@openbsd.org>
@@ -1640,6 +1640,9 @@ ba2long(struct bt_arg *ba, struct dt_evt *dtev)
        long val;
 
        switch (ba->ba_type) {
+       case B_AT_STR:
+               val = (*ba2str(ba, dtev) == '\0') ? 0 : 1;
+               break;
        case B_AT_LONG:
                val = (long)ba->ba_value;
                break;