[wasm] Fix memory leak in wasm-module-runner.cc

test/common/wasm/wasm-module-runner.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "test/common/wasm/wasm-module-runner.h"
 
 #include "src/handles.h"
 #include "src/isolate.h"
 #include "src/objects.h"
 #include "src/property-descriptor.h"
@@ skipping 43 matching lines @@
   if (module->import_table.size() > 0) {
     thrower->CompileError("Not supported: module has imports.");
   }
   if (module->export_table.size() == 0) {
     thrower->CompileError("Not supported: module has no exports.");
   }
   if (thrower->error()) return Handle<JSObject>::null();
 
   // Although we decoded the module for some pre-validation, run the bytes
   // again through the normal pipeline.
+  // TODO(wasm): Use {module} instead of decoding the module bytes again.
   MaybeHandle<JSObject> module_object = CreateModuleObjectFromBytes(
       isolate, module->module_start, module->module_end, thrower,
       ModuleOrigin::kWasmOrigin, Handle<Script>::null(), nullptr, nullptr);
   if (module_object.is_null()) {
     thrower->CompileError("Module pre-validation failed.");
     return Handle<JSObject>::null();
   }
   MaybeHandle<JSObject> maybe_instance = WasmModule::Instantiate(
       isolate, thrower, module_object.ToHandleChecked(),
       Handle<JSReceiver>::null(), Handle<JSArrayBuffer>::null());
   Handle<JSObject> instance;
   if (!maybe_instance.ToHandle(&instance)) {
     return Handle<JSObject>::null();
   }
   return instance;
 }
 
 const Handle<JSObject> CompileInstantiateWasmModuleForTesting(
     Isolate* isolate, ErrorThrower* thrower, const byte* module_start,
     const byte* module_end, ModuleOrigin origin) {
-  const WasmModule* module = DecodeWasmModuleForTesting(
-      isolate, thrower, module_start, module_end, origin);
+  std::unique_ptr<const WasmModule> module(DecodeWasmModuleForTesting(
+      isolate, thrower, module_start, module_end, origin));
 
   if (module == nullptr) {
     thrower->CompileError("Wasm module decoding failed");
     return Handle<JSObject>::null();
   }
-  return InstantiateModuleForTesting(isolate, thrower, module);
+  return InstantiateModuleForTesting(isolate, thrower, module.get());
 }
 
 int32_t RunWasmModuleForTesting(Isolate* isolate, Handle<JSObject> instance,
                                 int argc, Handle<Object> argv[],
                                 ModuleOrigin origin) {
   ErrorThrower thrower(isolate, "RunWasmModule");
   const char* f_name = origin == ModuleOrigin::kAsmJsOrigin ? "caller" : "main";
   return CallWasmFunctionForTesting(isolate, instance, &thrower, f_name, argc,
                                     argv, origin);
 }
@@ skipping 120 matching lines @@
 
 void SetupIsolateForWasmModule(Isolate* isolate) {
   WasmJs::InstallWasmMapsIfNeeded(isolate, isolate->native_context());
   WasmJs::InstallWasmModuleSymbolIfNeeded(isolate, isolate->global_object(),
                                           isolate->native_context());
 }
 }  // namespace testing
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8