Hi Dmitry,

On darcs.net, I tried to darcs get http://repos.mornfall.net/darcs/branch-2.2
and it got stuck on Copying pristine 6/22 : GNUmakefile

Running an strace -p `pgrep darcs` gave me this in a loop:
futex(0x861f738, FUTEX_WAIT, 27, NULL)  = -1 EINTR (Interrupted system call)
--- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
write(4, "\377"..., 1)                  = 1
sigreturn()                             = ? (mask now [])

Any clues?

We're running Darcs 2.2.98.2 (the Darcs 2.3 beta; we really ought to upgrade :-))

Naturally, this is not reproducible.  The fetch succeeds if we repeat it.

I suppose we should first try to reproduce this by hand maybe using a shell
srcipt to repeat darcs get.

Then we need to somehow boil it down to a simpler setup that makes the stuckness
more likely to occur.

Can't reproduce this.  Just need somebody else to complain of a similar
thing.  Hopefully we'll manage to dig this bug up when it strikes again.