Dll crash in simplest case

[frame]

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.