Prevent technically unsafe access with empty vector

minetest · Jan 3, 2016 · 87dcee6 · 87dcee6
1 parent a7c50a3
commit 87dcee6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/network/networkpacket.cpp b/src/network/networkpacket.cpp
@@ -77,6 +77,9 @@ void NetworkPacket::putRawString(const char* src, u32 len)
 		m_data.resize(m_datasize);
 	}
 
+	if (m_datasize == 0)
+		return;
+
 	memcpy(&m_data[m_read_offset], src, len);
 	m_read_offset += len;
 }