From 7cb2be0010f872e988a79c3ea1da7398e4702ca1 Mon Sep 17 00:00:00 2001
From: Danilo Piparo <danilo.piparo@cern.ch>
Date: Sun, 26 Jul 2026 18:36:18 +0200
Subject: [PATCH] [test] Add test for #8027

---
 tree/tree/test/TBranch.cxx | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tree/tree/test/TBranch.cxx b/tree/tree/test/TBranch.cxx
index 5290046098c77..04c2c1b261c41 100644
--- a/tree/tree/test/TBranch.cxx
+++ b/tree/tree/test/TBranch.cxx
@@ -234,4 +234,29 @@ TEST_F(TBranchTest, branchInheritsCompression)
 {
    for(int mode = 4; mode >= 0; --mode)
       ASSERT_TRUE(nocomp(mode)) << "Failed for mode: " << mode;
+}
+
+// Inspired by issue #8027
+TEST(Regression, InvalidRead)
+{
+   const char *ofileName = "test_8027.root";
+   struct PathRAII {
+      std::string fPath;
+      PathRAII(const char *path) : fPath(path) {}
+      ~PathRAII() { std::remove(fPath.c_str()); }
+   };
+   PathRAII pr(ofileName);
+   std::unique_ptr<TFile> tf{TFile::Open(ofileName, "RECREATE")};
+   auto t = new TTree("tree", "tree");
+
+   auto f = new TNamed("foo", "bar");
+   auto b = t->Branch("FileMetaData", &f);
+
+   delete f;
+   f = nullptr;
+   b->SetAddress(nullptr);
+
+   t->Fill();
+   t->Write();
+   tf->Close();
 }
\ No newline at end of file