From the creator of Windows' kernel:
https://www.windowscentral.com/software-apps/windows-longhor...
>Cutler found what he terms "the worst code he has ever seen," some IME code developed in Japan. He states that the code had no regard for bugs and that it got to a point where they couldn't fix some of the overflow plugs.
In the very same article he said:
>However, progress on this project halted as Windows XP's security had gone from bad to worse. Cutler states that his team alone fixed over 5,000 bugs while turning over some of the system's code.
His team fixed over 5000 mostly security bugs in Windows XP, and he still thinks it's still better than "some IME code developed in Japan". The mind boggles.