From 02677596a1c5da6b117f53bbc38a0ceee928f43e Mon Sep 17 00:00:00 2001
From: MaidOpi <maidopi@qq.com>
Date: Mon, 11 May 2026 13:32:11 +0800
Subject: [PATCH] memory hash workaround

---
 CMakeLists.txt                   |  1 +
 src/leanclr_wasm_libcxx_shim.cpp | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 src/leanclr_wasm_libcxx_shim.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 13c8935..ea4261b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,6 +85,7 @@ add_library(leanclr_godot SHARED
     src/leanclr_script_language.cpp
     src/leanclr_script_loader.cpp
     src/leanclr_script_saver.cpp
+    src/leanclr_wasm_libcxx_shim.cpp
     src/register_types.cpp
 )
 
diff --git a/src/leanclr_wasm_libcxx_shim.cpp b/src/leanclr_wasm_libcxx_shim.cpp
new file mode 100644
index 0000000..974802d
--- /dev/null
+++ b/src/leanclr_wasm_libcxx_shim.cpp
@@ -0,0 +1,18 @@
+#include <cstddef>
+
+#if defined(__EMSCRIPTEN__)
+extern "C" std::size_t leanclr_godot_libcxx_hash_memory(const void* p_data, std::size_t p_size) noexcept
+    __asm__("_ZNSt3__213__hash_memoryEPKvm");
+
+extern "C" std::size_t leanclr_godot_libcxx_hash_memory(const void* p_data, std::size_t p_size) noexcept
+{
+    const unsigned char* bytes = static_cast<const unsigned char*>(p_data);
+    std::size_t hash = 1469598103934665603ull;
+    for (std::size_t i = 0; i < p_size; ++i)
+    {
+        hash ^= bytes[i];
+        hash *= 1099511628211ull;
+    }
+    return hash;
+}
+#endif