From 805e6593b999dd99ebcbd5205481bda5b0bb26f5 Mon Sep 17 00:00:00 2001
From: Luke Wilde <lukew@serenityos.org>
Date: Fri, 28 Oct 2022 06:00:15 +0100
Subject: [PATCH] LibWasm: Add missing validation for memory.copy

This has the exact same validation as memory.fill
---
 Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
index fc512253db..56cba381e0 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
+++ b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
@@ -1887,6 +1887,15 @@ VALIDATE_INSTRUCTION(memory_fill)
     return {};
 }
 
+VALIDATE_INSTRUCTION(memory_copy)
+{
+    TRY(validate(MemoryIndex { 0 }));
+
+    TRY((stack.take<ValueType::I32, ValueType::I32, ValueType::I32>()));
+
+    return {};
+}
+
 VALIDATE_INSTRUCTION(memory_init)
 {
     TRY(validate(MemoryIndex { 0 }));