From c7cf87c9f8502447cb739e835e41494a4eaba10b Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Wed, 15 Jul 2020 23:53:58 +0200
Subject: [PATCH] UserspaceEmulator: Don't complain about free(nullptr)

---
 DevTools/UserspaceEmulator/MallocTracer.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/DevTools/UserspaceEmulator/MallocTracer.cpp b/DevTools/UserspaceEmulator/MallocTracer.cpp
index ea9ef7428c..9429d1c156 100644
--- a/DevTools/UserspaceEmulator/MallocTracer.cpp
+++ b/DevTools/UserspaceEmulator/MallocTracer.cpp
@@ -49,6 +49,9 @@ void MallocTracer::target_did_malloc(Badge<SoftCPU>, FlatPtr address, size_t siz
 
 void MallocTracer::target_did_free(Badge<SoftCPU>, FlatPtr address)
 {
+    if (!address)
+        return;
+
     for (auto& mallocation : m_mallocations) {
         if (mallocation.address == address) {
             if (mallocation.freed) {