On Mon, 22 Sept 2025 at 13:28, Old, Oliver via Cygwin <[email protected]> wrote: > > Mark Liam Brown wrote: > > This is exposed to the userspace as NtCreateProcessEx() as documented in > > https://github.com/huntandhackett/process-cloning > > From the linked page: > > Unfortunately, it doesn't matter which method we prefer because the results > > will be identically disappointing: STATUS_PROCESS_IS_TERMINATING, or, in > > other > > words, "An attempt was made to access an exiting process." The system > > considers the cloned threadless process as waiting for deletion and, thus, > > refuses to create threads in it – something we inevitably need to execute > > code. Sorry, but NtCreateProcessEx-based cloning is incompatible with code > > execution. > > > > > Note that it wasn't always the case. The kernel allowed creating threads > > > in > > > such processes until Windows 8.1.
That was a bug, long fixed. UWIN added pthread support at some point, so yes, threads and RtlCloneUserProcess() do work together. Lionel -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
