Jorgen Grahn wrote:
"Bus Error" is an old BSD-ism which I guess you don't see much in Linux or Solaris these days (or maybe I never run buggy code ;-). It translates roughly to "segmentation fault", but IIRC it is more about accessing memory words on nonaligned adresses than about accessing addresses your process doesn't own.
I think the term goes back to the PDP-11 or thereabouts. The Unibus used a handshaking protocol, and if you tried to access an address that didn't have any memory or I/O device assigned to it, the bus hardware would time out and you got an interrupt. The 68K family also used the term in a similar way. I think the distinction between a bus error and a seg fault is that bus errors are to do with physical addresses, and seg faults are to do with virtual addresses. -- Greg -- http://mail.python.org/mailman/listinfo/python-list
