We encountered the following problem in Sage, which seems to be
present in ECL: run an infinite loop and try to interrupt it,
sometimes the interrupt is missed.
For example, at ECL prompt:
(setf i 0)
(defun infinite() (loop (incf i)))
Now press CTRL+C.
Most of the time, the loop will be broken, but sometimes you'll just
get a nice ^C on screen.
I've got no problem with this test with the old version of ECL used in
The problem may be deeper, because we also sometimes fails to evaluate
'2', which is quite surprising!