Immediately give the result of an explicit resource allocation to a manager object

Reason

If you don't, an exception or a return might lead to a leak.

Example, bad

void func(const string& name)
{
    FILE* f = fopen(name, "r");            // open the file
    vector<char> buf(1024);
    auto _ = finally([f] { fclose(f); });  // remember to close the file
    // ...
}

The allocation of buf might fail and leak the file handle.

Example

void func(const string& name)
{
    ifstream f{name};   // open the file
    vector<char> buf(1024);
    // ...
}

The use of the file handle (in ifstream) is simple, efficient, and safe.

Enforcement

• Flag explicit allocations used to initialize pointers (problem: how many direct resource allocations can we recognize?)