Dear Marcone, that you want we all to do?
Rar detect sfx by small signature, and some bytes in exe looks
But this is not the problem - just do not open your exe with rar.
Or i just don't understand...
1. try to compile with anoter .res or/and another .ico (if magic
bytes in .res)
2. wait next dmd version (if magic bytes in dmd runtime)
3. try gdc or ldc from https://dlang.org/download.html (if magic
bytes in dmd runtime)
4 try to pack yor exe with free packer like https://upx.github.io/