Hi,
I don't understand why my loop crashes,
Here is my grovel definition for ifaddrs struct:
(cstruct ifaddrs "struct ifaddrs"
(next "ifa_next" :type :pointer)
(name "ifa_name" :type :string)
(flags "ifa_flags" :type :unsigned-int)
(address "ifa_addr" :type :pointer)
(netmask "ifa_netmask" :type :pointer)
(broadcast "ifa_broadaddr" :type :pointer)
(point-to-point-destination "ifa_dstaddr" :type :pointer)
(data "ifa_data" :type :pointer))
Here is my loop, i was expecting next to be a null pointer after the first
vmnet8
CL-USER> (cffi:with-foreign-object (p
:pointer)
(getifaddrs
p)
(do
()
((cffi:null-pointer-p
p))
(format t "Interface: ~a~%" (cffi:foreign-slot-value
(cffi:mem-ref p :pointer) 'ifaddrs
'name))
(setf p (cffi:foreign-slot-value p 'ifaddrs 'next))))
Interface:
lo
Interface:
sit0
Interface:
eth0
Interface:
wlan0
Interface:
vmnet1
Interface:
vmnet8
Interface:
lo
Interface:
wlan0
Interface:
vmnet1
Interface:
vmnet8
Interface:
lo
Interface:
wlan0
Interface:
vmnet1
Interface:
vmnet8
; Evaluation aborted on #<SB-SYS:MEMORY-FAULT-ERROR {BF604E1}>.
Regards,
Jose
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