Application of the anti-inscriptions patch

Retropex · Dec 7, 2023 · 4acbaa5 · 4acbaa5
1 parent 44d8b13
commit 4acbaa5
Showing 1 changed file with 8 additions and 0 deletions.
diff --git 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)
  {