# V613\. Suspicious pointer arithmetic with 'malloc/new'\.

The analyzer has detected a potential error in the code allocating memory\. A pointer returned by the 'malloc' function or any other similar function is summed up with some number\. It is very strange and it's highly probable that the code contains a misprint\.

Consider this sample:

```cpp
a = ((int *)(malloc(sizeof(int)*(3+5)))+2);
```

The expression contains many extraneous parentheses and the programmer must have got mixed up in them\. Let's simplify this code to make it clearer:

```cpp
a = (int *)malloc(sizeof(int)*8);
a += 2;
```

It's very strange to add number 2 to the pointer\. Even if it should be so and the code is correct, it is very dangerous\. For example, you might easily forget that memory should be free this way: "free\(a \- 2\);"\.

This is the correct code:

```cpp
a = (int *)malloc(sizeof(int)*(3+5+2));
```