Dll crash in simplest case

[Vitalii]

On Monday, 25 January 2021 at 10:26:20 UTC, frame wrote:
> On Monday, 25 January 2021 at 07:58:01 UTC, Vitalii wrote:
>> Hello everyone! I want to create shared library that buffer 
>> some data and do some calculations, another program will use 
>> it. I wonder how this simplest code lead to crash (freeze) of 
>> dll:
>
> Not tested your code but you have to use
>
> import core.sys.windows.dll;
> mixin SimpleDllMain;
>
> Windows ist expecting a DllMain routine and runtime needs to 
> attach the DLL thread.

Yes. I'm doing it whet add dll.d 
(https://wiki.dlang.org/Win32_DLLs_in_D) in compile line, it 
contents:
---
import core.sys.windows.windows;
import core.sys.windows.dll;

__gshared HINSTANCE g_hInst;

extern (Windows)
BOOL DllMain(HINSTANCE hInstance, ULONG ulReason, LPVOID 
pvReserved)
{
     switch (ulReason)
     {
	case DLL_PROCESS_ATTACH:
	    g_hInst = hInstance;
	    dll_process_attach( hInstance, true );
	    break;

	case DLL_PROCESS_DETACH:
	    dll_process_detach( hInstance, true );
	    break;

	case DLL_THREAD_ATTACH:
	    dll_thread_attach( true, true );
	    break;

	case DLL_THREAD_DETACH:
	    dll_thread_detach( true, true );
	    break;

         default:
     }
     return true;
}
---
Dll is starting ok. But after freeze after printing number around 
64000 (~2^16). When I change assoc.array to simple array of 
double[] it freeze after number around 520000 (~2^19), int[] -- 
1.000.000. So I conclude than dll freeze after exceed some memory 
limit about 4 Mb. But I still can't see what I'm doing wrong. Any 
ideas?