From cb1bf20ab4f0c57eb14db7e05f5b638cece980d7 Mon Sep 17 00:00:00 2001
From: Oleksandr <115580134+oleks-rip@users.noreply.github.com>
Date: Thu, 12 Feb 2026 13:12:04 -0500
Subject: [PATCH] Check that HFS object is always new

---
 src/xrpld/app/wasm/HostFunc.h         | 6 ++++++
 src/xrpld/app/wasm/HostFuncImpl.h     | 7 +++++++
 src/xrpld/app/wasm/detail/WasmiVM.cpp | 2 ++
 3 files changed, 15 insertions(+)

diff --git a/src/xrpld/app/wasm/HostFunc.h b/src/xrpld/app/wasm/HostFunc.h
index 8ca02efed1..ea1e171332 100644
--- a/src/xrpld/app/wasm/HostFunc.h
+++ b/src/xrpld/app/wasm/HostFunc.h
@@ -110,6 +110,12 @@ struct HostFunctions
         return j_;
     }
 
+    virtual bool
+    checkSelf() const
+    {
+        return true;
+    }
+
     virtual Expected<std::uint32_t, HostFunctionError>
     getLedgerSqn() const
     {
diff --git a/src/xrpld/app/wasm/HostFuncImpl.h b/src/xrpld/app/wasm/HostFuncImpl.h
index b86a02254f..fc171088b6 100644
--- a/src/xrpld/app/wasm/HostFuncImpl.h
+++ b/src/xrpld/app/wasm/HostFuncImpl.h
@@ -74,6 +74,13 @@ public:
         return rt_;
     }
 
+    virtual bool
+    checkSelf() const override
+    {
+        return !currentLedgerObj_ && !data_ &&
+            std::ranges::find_if(cache_, [](auto& p) { return !!p; }) == cache_.end();
+    }
+
     std::optional<Bytes> const&
     getData() const
     {
diff --git a/src/xrpld/app/wasm/detail/WasmiVM.cpp b/src/xrpld/app/wasm/detail/WasmiVM.cpp
index c0454fceec..ff93e70ef0 100644
--- a/src/xrpld/app/wasm/detail/WasmiVM.cpp
+++ b/src/xrpld/app/wasm/detail/WasmiVM.cpp
@@ -782,6 +782,8 @@ WasmiEngine::runHlp(
 #ifndef WASM_PERF_TESTS
     if (wasmCode.empty())
         throw std::runtime_error("empty module");
+    if (!hfs.checkSelf())
+        throw std::runtime_error("hfs isn't clean");
 #else
     // re-using module only for perf tests
     if (!wasmCode.empty())