first, i thought i could enter any -p3 value for a midi controlled instrument and make it run infinitely. on the contrary it doesn't run at all whenever i do this. however, it always reports 0 errors in performance when i run the score below. incidentally, when i enter a positive value to see if it works, qute csound v. 0.4 to crash every single time. i tried pasting it into a new file, but that also crashed. i tried deleting the CsOption, but that crashed too:

--midi-key-oct=4
--midi-velocity=5

massign 1, 4
ctrlinit 1, 1,0

sr = 44100
ksmps = 128
nchnls = 2
0dbfs = 1

instr 4
kfreq midic7 1, 0, 1000
a1 noise kfreq, .5
outs a1/13.5, a1/13.5

endin

f 1 0 1024 10 1
i 4 0 10