Fixes annoying issue in wasmer, removes pointer type validation for now

src/ScriptResolving/WASM/InterfaceMethods/WasmHelperFile.hpp

@@ -68,10 +68,8 @@ public:
         return f;
     }
 
-    template <typename T>
+    template <typename T> inline static T ConvertAllArguments(const wasm_val_vec_t* t, std::size_t& index) {
-    inline static T ConvertAllArguments(const wasm_val_vec_t* t, std::size_t& index,
+        return FromVal<T>(t->data[index++]);
-                                        WebAssemblyScriptResolver* resolver) {
-        return FromVal<T>(t->data[index++], resolver);
     }
 
     template <class R, class... Args>
@@ -81,25 +79,28 @@ public:
         struct Env {
             WebAssemblyScriptResolver* Resolver;
             std::function<R(WebAssemblyScriptResolver*, Args...)> Func;
-            __attribute__((no_sanitize("address")))
+            ~Env() {}
-            ~Env(){}
         };
 
-        auto env = new Env{.Resolver = resolver, .Func = func};
+        auto env = (Env*)malloc(sizeof(Env));
+        new (env) Env{.Resolver = resolver, .Func = func};
+        resolver->Temp_WasmerBug2_2_1_Bypass.Append(env);
         auto* f = wasm_func_new_with_env(
             store, funcType,
             [](void* env, const wasm_val_vec_t* parameters, wasm_val_vec_t* results) -> wasm_trap_t* {
                 auto e = *(Env*)env;
                 size_t index = 0;
-                R result = e.Func(e.Resolver, ConvertAllArguments<Args>(parameters, index, e.Resolver)...);
+                try {
+                    R result = e.Func(e.Resolver, ConvertAllArguments<Args>(parameters, index)...);
                     results->data[0] = ToVal<R>(result);
+                } catch (ArbUt::Exception& exception) {
+                    return CreateTrapFromException(exception, e.Resolver);
+                } catch (std::exception& exception) {
+                    return FromStdException(exception, e.Resolver);
+                }
                 return nullptr;
             },
-            env,
+            env, /*[](void*) { delete (Env*)env; }*/ nullptr);
-            [](void* env) __attribute__((no_sanitize("address"))) {
-                delete (Env*)env;
-            }
-            );
         wasm_functype_delete(funcType);
         return f;
     }
@@ -138,16 +139,15 @@ private:
                 return WASM_I32_VAL((i32)val);
             }
         } else if constexpr (std::is_same<T, const ArbUt::StringView&>()) {
-            return WASM_I64_VAL(reinterpret_cast<i64>(&val));
+            auto v = &val;
+            return WASM_I64_VAL(reinterpret_cast<i64>(v));
         }
         THROW("Unhandled value type: ", typeid(T).name());
     }
 
-    template <typename T> inline static T FromVal(const wasm_val_t& val, WebAssemblyScriptResolver* resolver) {
+    template <typename T> inline static T FromVal(const wasm_val_t& val) {
         if constexpr (std::is_pointer<T>()) {
-            auto v = reinterpret_cast<void*>(val.of.i64);
+            return (T) reinterpret_cast<void*>(val.of.i64);
-            Ensure(resolver->ValidateLoadedPointer<std::remove_pointer<T>>(v));
-            return (T)v;
         } else if constexpr (is_specialization<T, ArbUt::BorrowedPtr>::value) {
             return dynamic_cast<T>(reinterpret_cast<void*>(val.of.i64));
         } else if constexpr (is_specialization<T, ArbUt::OptionalBorrowedPtr>::value) {

src/ScriptResolving/WASM/WebAssemblyFunctionCall.hpp

@@ -4,10 +4,8 @@
 #include <Arbutils/Collections/List.hpp>
 #include <Arbutils/Memory/Memory.hpp>
 #include <wasm.h>
-#include "wasm.h"
 
-template <u32 argsCount, u32 returnsCount>
+template <u32 argsCount, u32 returnsCount> class WebAssemblyFunctionCall {
-class WebAssemblyFunctionCall {
 public:
     WebAssemblyFunctionCall(const ArbUt::BorrowedPtr<wasm_func_t>& func) : _func(func) {}
 

src/ScriptResolving/WASM/WebAssemblyScriptResolver.cpp

@@ -18,6 +18,9 @@ WebAssemblyScriptResolver::~WebAssemblyScriptResolver() {
     for (auto& import : _imports) {
         wasm_func_delete(import.second);
     }
+    for (auto e : Temp_WasmerBug2_2_1_Bypass) {
+        free(e);
+    }
     if (_instance != nullptr) {
         wasm_instance_delete(_instance);
     }
@@ -153,7 +156,7 @@ WebAssemblyScriptResolver::LoadScript(const ArbUt::OptionalBorrowedPtr<void>& ow
     if (findCapabilities != _scriptCapabilities.end()) {
         capabilities = findCapabilities->second;
     } else {
-        auto getCapabilitiesOpt = GetFunction<1,2>("get_script_capabilities"_cnc);
+        auto getCapabilitiesOpt = GetFunction<1, 2>("get_script_capabilities"_cnc);
         if (getCapabilitiesOpt.has_value()) {
             auto& getCapabilitiesFunc = getCapabilitiesOpt.value();
             getCapabilitiesFunc.Loadi32(0, result);
@@ -162,7 +165,7 @@ WebAssemblyScriptResolver::LoadScript(const ArbUt::OptionalBorrowedPtr<void>& ow
             auto ptr = (WebAssemblyScriptCapabilities*)(wasm_memory_data(_memory) + rawResult[0].of.i32);
             auto end = (WebAssemblyScriptCapabilities*)(ptr + rawResult[1].of.i32);
             auto vec = std::vector<WebAssemblyScriptCapabilities>(ptr, end);
-            for (auto capability: vec){
+            for (auto capability : vec) {
                 capabilities.insert(capability);
             }
         }

src/ScriptResolving/WASM/WebAssemblyScriptResolver.hpp

@@ -44,24 +44,18 @@ public:
 
     [[nodiscard]] inline wasm_memory_t* GetMemory() const noexcept { return _memory; }
 
-    ArbUt::OptionalUniquePtr<CreatureLib::Battling::BattleScript> LoadScript(const ArbUt::OptionalBorrowedPtr<void>& owner,
+    ArbUt::OptionalUniquePtr<CreatureLib::Battling::BattleScript>
-                                                    ScriptCategory category,
+    LoadScript(const ArbUt::OptionalBorrowedPtr<void>& owner, ScriptCategory category,
                const ArbUt::StringView& scriptName) nullable override;
 
     [[nodiscard]] inline wasm_store_t* GetStore() const noexcept { return _store; }
 
     inline void RemoveRegisteredScript(i32 wasmPtr) { _loadedScripts.Remove(wasmPtr); }
 
-    template <typename T>
+    // HACK: This is a temporary way to bypass a bug in wasmer 2.2.1. As finalizers on wasm_func_new_with_env are called
-    inline void MarkLoadedPointer(T* ptr){
+    // twice, the environment objects of WasmHelpers::CreateFunc are deleted twice. This causes major issues. This
-        _loadedPointers.Set((void*)ptr, typeid(T));
+    // should be fixed in the next wasmer release.
-    }
+    ArbUt::List<void*> Temp_WasmerBug2_2_1_Bypass;
-
-    template <typename T>
-    inline bool ValidateLoadedPointer(void* ptr){
-        const auto& opt = _loadedPointers.TryGet(ptr);
-        return opt.has_value() && opt.value() == typeid(T);
-    }
 
 private:
     wasm_engine_t* _engine;
@@ -85,8 +79,6 @@ private:
     };
     std::unordered_map<scriptCapabilitiesKey, std::unordered_set<WebAssemblyScriptCapabilities>, pair_hash>
         _scriptCapabilities;
-
-    ArbUt::Dictionary<void*, std::type_info> _loadedPointers;
 };
 
 #endif // PKMNLIB_WEBASSEMBLYSCRIPTRESOLVER_HPP