# V1005\. The resource was acquired using 'X' function but was released using incompatible 'Y' function\.

The analyzer has detected a possible error that has to do with using incompatible functions to acquire and release a resource\.

For example, this warning will be issued when a file is opened using the 'fopen\_s' function and closed using the 'CloseHandle' function\.

Consider the following example\.

```cpp
FILE* file = nullptr;
errno_t err = fopen_s(&file, "file.txt", "r");
...
CloseHandle(file);
```

The result of executing this code is unknown\. The 'CloseHandle' function may return the error status and merely cause a resource leak \(fail to close the file\), but more severe implications are also possible\. Incorrect calls of some functions lead to undefined behavior, which means unpredictable results, including a crash\.

This is what the fixed code should look like:

```cpp
FILE* file = nullptr;
errno_t err = fopen_s(&file, "file.txt", "r");
...
fclose(file);
```