[MacPorts] #21088: sysutils/ifstat compiles but do not work on snow leopard

[MacPorts]

#21088: sysutils/ifstat compiles but do not work on snow leopard
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 Reporter:  mpapamanz@…          |       Owner:  macports-tickets@…                   
     Type:  defect               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.8.0                                
 Keywords:                       |        Port:                                       
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 When compiled on snow leopard there are just two warning:
 gcc -I. -g -O2 -DHAVE_CONFIG_H  -DNETSNMP_ENABLE_IPV6 -g -Os -pipe
 -DBUILD=127 -DMACOSX_DEPLOYMENT_TARGET=10.6
 -F/System/Library/PrivateFrameworks/ -F/System/Library/Frameworks/
 -Udarwin10 -Ddarwin10=darwin10 -I/usr/local/include -c drivers.c -o
 drivers.o
 drivers.c: In function ‘get_ifcount’:
 drivers.c:599: warning: passing argument 4 of ‘sysctl’ from incompatible
 pointer type
 drivers.c: In function ‘get_ifdata’:
 drivers.c:612: warning: passing argument 4 of ‘sysctl’ from incompatible
 pointer type

 but, once installed, the program gives the following error
 $ ./ifstat
 ifstat: sysctl(net.link.generic.ifmib.ifcount): Bad address
 ifstat: no interfaces to monitor!

 The issue seems related to a wrong use of sysctl syscall: they pass an
 integer instead of a size_t, with 32 bit gcc the two types have the same
 size, but with 64 bit gcc the size_t variables are 64bit long (instead of
 32bit).

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Ticket URL: <http://trac.macports.org/ticket/21088>
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