From 973456ce23b7418a3f03998e317939c5af3e6f01 Mon Sep 17 00:00:00 2001
From: niftynei <niftynei@gmail.com>
Date: Thu, 13 Aug 2020 11:38:46 -0500
Subject: [PATCH] psbt: assertion for index in bounds

---
 common/psbt_open.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common/psbt_open.c b/common/psbt_open.c
index 2061a1796..70a027b8f 100644
--- a/common/psbt_open.c
+++ b/common/psbt_open.c
@@ -377,6 +377,7 @@ bool psbt_has_required_fields(struct wally_psbt *psbt)
 			return false;
 
 		/* If is P2SH, redeemscript must be present */
+		assert(psbt->tx->inputs[i].index < input->utxo->num_outputs);
 		const u8 *outscript =
 			wally_tx_output_get_script(tmpctx,
 				&input->utxo->outputs[psbt->tx->inputs[i].index]);