memory hash workaround

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
 )
 

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