X-Git-Url: https://git.archive.openwrt.org/?p=project%2Flibubox.git;a=blobdiff_plain;f=blobmsg.h;fp=blobmsg.h;h=1e497f77041784882b00ce40e2aade7c232f3c3d;hp=3eeec9b035ea63aca99b2a7f9e609d7b9d6df958;hb=ef9b6b92df223e783a365f34998bc0f299b977f2;hpb=510e4956e58727d68fbf7dea1646a344d6901c91

diff --git a/blobmsg.h b/blobmsg.h
index 3eeec9b..1e497f7 100644
--- a/blobmsg.h
+++ b/blobmsg.h
@@ -204,9 +204,10 @@ void blobmsg_printf(struct blob_buf *buf, const char *name, const char *format,
 /* blobmsg to json formatting */
 
 #define blobmsg_for_each_attr(pos, attr, rem) \
-	for (rem = blobmsg_data_len(attr), pos = blobmsg_data(attr); \
-		 rem > 0 && (blob_pad_len(pos) <= rem) && \
-		 (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
-		 rem -= blob_pad_len(pos), pos = blob_next(pos))
+	for (rem = attr ? blobmsg_data_len(attr) : 0, \
+	     pos = attr ? blobmsg_data(attr) : 0; \
+	     rem > 0 && (blob_pad_len(pos) <= rem) && \
+	     (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
+	     rem -= blob_pad_len(pos), pos = blob_next(pos))
 
 #endif