From bfd4c7a16cd35452bc5d1331f05d8bd713b37d14 Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Fri, 14 May 2021 09:22:01 +0430
Subject: [PATCH] AK: Avoid passing nullptr to __buitin_memcpy() in
 ByteBuffer::grow()

---
 AK/ByteBuffer.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/AK/ByteBuffer.h b/AK/ByteBuffer.h
index 38e1e377f9..a308782638 100644
--- a/AK/ByteBuffer.h
+++ b/AK/ByteBuffer.h
@@ -277,7 +277,8 @@ inline void ByteBufferImpl::grow(size_t size)
         return;
     }
     u8* new_data = static_cast<u8*>(kmalloc(size));
-    __builtin_memcpy(new_data, m_data, m_size);
+    if (m_data)
+        __builtin_memcpy(new_data, m_data, m_size);
     u8* old_data = m_data;
     m_data = new_data;
     m_size = size;