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-rw-r--r--include/osmocom/core/msgb.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h
index a9831957..a8dc205b 100644
--- a/include/osmocom/core/msgb.h
+++ b/include/osmocom/core/msgb.h
@@ -331,6 +331,9 @@ static inline void msgb_push_u32(struct msgb *msg, uint32_t word)
*/
static inline unsigned char *msgb_pull(struct msgb *msgb, unsigned int len)
{
+ if (msgb_length(msgb) < len)
+ MSGB_ABORT(msgb, "msgb too small to pull %u (len %u)\n",
+ len, msgb_length(msgb));
msgb->len -= len;
return msgb->data += len;
}