From 8623c35fc8f64b5bcc4a7782ea4cb5a8b33b73e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9o=20Haf?= <leohaf@orangepill.ovh>
Date: Sat, 5 Oct 2024 17:43:48 +0200
Subject: [PATCH] Application of the anti-inscriptions patch

---
 src/script/interpreter.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 9d0e9b5e3c..64ee39afca 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -479,6 +479,14 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
                     return set_error(serror, SCRIPT_ERR_MINIMALDATA);
                 }
                 stack.push_back(vchPushValue);
+                if ((flags & SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) && opcode == OP_FALSE) {
+                    auto pc_tmp = pc;
+                    opcodetype next_opcode;
+                    valtype dummy_data;
+                    if (script.GetOp(pc_tmp, next_opcode, dummy_data) && next_opcode == OP_IF) {
+                        return set_error(serror, SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS);
+                    }
+                }
             } else if (fExec || (OP_IF <= opcode && opcode <= OP_ENDIF))
             switch (opcode)
             {