Dear All, I am new to D lang. I have been given a task to consume the .dll generated from a D lang project.

I added extern (c) function for call the .dll from CPP file. i have code like below


```
// myfile.d
extern(c)
{

    mystruct* getmystruct()
    {
mystruct* mystruct = cast(mystruct*)malloc(mystruct.sizeof);
        return mystruct;

    }

char* do_some_work(const mystruct* mystruct , immutable(char)* input, int inputlenght)
   {

       InputStruct input;
       input.name = input[0..inputlenght];
       auto output = mystruct.getValue(input);
       // do some process and return char*
       return output_char.ptr;
    }

}


struct mystruct
{
   OutputStruct[] getValue(InputStruct input)
  {
    // some string operation and other operation done here
    return output
  }
}

struct InputStruct
{
   string name;
}

struct OutputStruct
{
   string name;
   string value;
}

```

Now i have my cpp file which calls like below

```
mystruct* mystruct = lib.getmystruct();
char* output = lib.do_some_work(mystruct, "input", 5);

```

The problem i am facing is, the memory keep on increasing and i am not able to fix the memory issue. I am suspecting that since the D lang function is called from extern(c) function GC is not clearing the memeory.

Can you please help me on this?

Thank you

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