From a9fa9429d51098c73e769b2b504798d8560dde54 Mon Sep 17 00:00:00 2001
From: Harikrishnan Mulackal <webmail.hari@gmail.com>
Date: Fri, 15 May 2020 20:46:50 +0530
Subject: [PATCH] Fixed bug in BlockDeDuplicator

---
 libevmasm/BlockDeduplicator.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libevmasm/BlockDeduplicator.cpp b/libevmasm/BlockDeduplicator.cpp
index 9a26db8ca..decfee650 100644
--- a/libevmasm/BlockDeduplicator.cpp
+++ b/libevmasm/BlockDeduplicator.cpp
@@ -113,6 +113,10 @@ bool BlockDeduplicator::applyTagReplacement(
 			if (subId != _subId)
 				continue;
 			auto it = _replacements.find(tagId);
+			// Recursively look for the element replaced by tagId
+			for (auto _it = it; _it != _replacements.end(); _it = _replacements.find(_it->second))
+				it = _it;
+
 			if (it != _replacements.end())
 			{
 				changed = true;