From 6760ea33a0b8bcdbe847948c48fd7cd3f4d0e98d Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Fri, 22 Apr 2022 09:55:54 +0430
Subject: LibWasm: Make memory_grow validation push back the old memory size

---
 Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
index bfae046f22..a64d4958ea 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
+++ b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
@@ -1873,6 +1873,7 @@ VALIDATE_INSTRUCTION(memory_grow)
 {
     TRY(validate(MemoryIndex { 0 }));
     TRY((stack.take<ValueType::I32>()));
+    stack.append(ValueType(ValueType::I32));
 
     return {};
 }
-- 
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