id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	branch	branch_author	launchpad_bug
5962	Clock.callLater(0, f) can lead to infinite loop	exarkun		"Consider:

{{{
#!python
from twisted.internet.task import Clock

def f():
    c.callLater(0, f)

c = Clock()
f()
c.advance(0)
print 'Done'
}}}

The expected behavior is that `f` runs once and then ''Done'' is printed and the program exits.  Instead, `Clock.advance` spends forever running and re-running `f`.  This is similar to a bug that the real `IReactorTime` implementation used to have but that we fixed."	defect	new	normal		core		easy review gsoc