From 0ca2789a18403d3a8dc9e742727e339d15096bcf Mon Sep 17 00:00:00 2001
From: Skylot <skylot@gmail.com>
Date: Sat, 11 May 2019 22:34:36 +0300
Subject: [PATCH] fix: prevent stack overflow in type inference if update tree
 is too deep

---
 .../jadx/core/dex/visitors/typeinference/TypeUpdate.java    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/jadx-core/src/main/java/jadx/core/dex/visitors/typeinference/TypeUpdate.java b/jadx-core/src/main/java/jadx/core/dex/visitors/typeinference/TypeUpdate.java
index b0c1412cf..794c529c6 100644
--- a/jadx-core/src/main/java/jadx/core/dex/visitors/typeinference/TypeUpdate.java
+++ b/jadx-core/src/main/java/jadx/core/dex/visitors/typeinference/TypeUpdate.java
@@ -151,6 +151,12 @@ public final class TypeUpdate {
 			return CHANGED;
 		}
 		updateInfo.requestUpdate(arg, candidateType);
+		if (updateInfo.getUpdates().size() > 500) {
+			if (Consts.DEBUG) {
+				LOG.error("Type update error: too deep update tree");
+			}
+			return REJECT;
+		}
 		try {
 			TypeUpdateResult result = runListeners(updateInfo, arg, candidateType);
 			if (result == REJECT) {