From 08f57a0057c58f19cd8ae3de89548d014980478a Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter@wuille.net>
Date: Thu, 17 Jun 2021 18:14:53 -0700
Subject: [PATCH] Assert that IsComplete() in GetSpendData()

---
 src/script/standard.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index b8349bb9ab..67a79a157c 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -504,6 +504,7 @@ WitnessV1Taproot TaprootBuilder::GetOutput() { return WitnessV1Taproot{m_output_
 
 TaprootSpendData TaprootBuilder::GetSpendData() const
 {
+    assert(IsComplete());
     TaprootSpendData spd;
     spd.merkle_root = m_branch.size() == 0 ? uint256() : m_branch[0]->hash;
     spd.internal_key = m_internal_key;