From f89967463933c5e1c7dd3e841813035c1ff260dc Mon Sep 17 00:00:00 2001
From: Bruno Garcia <brunoely.gc@gmail.com>
Date: Wed, 25 Mar 2026 09:49:26 -0300
Subject: [PATCH] test: script: boundary at exactly 65535 bytes must use
 OP_PUSHDATA2

---
 src/test/script_tests.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index 1478cf91252..b07870207cb 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -1455,6 +1455,14 @@ BOOST_AUTO_TEST_CASE(script_IsPushOnly_on_invalid_scripts)
     BOOST_CHECK(!CScript(direct, direct+sizeof(direct)).IsPushOnly());
 }
 
+BOOST_AUTO_TEST_CASE(script_CheckMinimalPush_boundary)
+{
+    // Test the boundary at exactly 65535 bytes: must use OP_PUSHDATA2, not OP_PUSHDATA4.
+    std::vector<unsigned char> data(65535, '\x42');
+    BOOST_CHECK(CheckMinimalPush(data, OP_PUSHDATA2));
+    BOOST_CHECK(!CheckMinimalPush(data, OP_PUSHDATA4));
+}
+
 BOOST_AUTO_TEST_CASE(script_GetScriptAsm)
 {
     BOOST_CHECK_EQUAL("OP_CHECKLOCKTIMEVERIFY", ScriptToAsmStr(CScript() << OP_NOP2, true));