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I would post it to the SBCL developer's mailing list and see what they have to say. Have you posted it to sbcl mailing list. I haven't see at gmane.lisp.steel-bank.devel. deftsp: findinglisp meant "If I were you I would post...", i.e. he meant that you should post to the SBCL developers' ...

Thank you very very much! I think this is a bug, and a known issue for the sbcl people. In fact, I have a recollection of reading something about this and sbcl-devel a few months ago. I have searched throught the archives and found this, http://sourceforge.net/mailarchive/message.php?msg_id=4865A852...

Exolon wrote:Does it happen with other weird 'virtual' mounted files - i.e. in /dev, /proc?

I test"/proc/stat" for read read-line with sbcl 1.0.20, it works.

"/sys/class/net/eth0/statistics/rx_bytes" still hang.

findinglisp wrote:I would post it to the SBCL developer's mailing list and see what they have to say.

Have you posted it to sbcl mailing list. I haven't see at gmane.lisp.steel-bank.devel.

Hmm... good question. When I try it, SBCL just hangs. I can interrupt it with C-c in a term window, but it never returns. A simple "cat /sys/class/net/eth0/statistics/rx_bytes" works just fine. This is with SBCL 1.0.17 on Fedora 8 (2.6.25.11 kernel). SBCL 1.0.18 1.0.19 on Debian sid (2.6....

This code can work with clisp but sbcl fail.

I copy file sys/class/net/eth0/statistics/rx_bytes to my home folder, and with-open-file works.

I don't know why? Is this sbcl's bug?