On Tue, Mar 18, 2014 at 05:49:48PM -0700, PolarStorm wrote: >David Stacey wrote >> I was testing with >> cat ding.wav > /dev/dsp >> This gives a segmentation fault with the latest (2014-03-18) snapshot; >> no sound is heard However, if I repeat your test: >> cp ding.wav /dev/dsp >> Then that works and the ding dings. Which confuses me greatly - I've >> been using *nix for nearly 20 years, and I honestly would have said that >> the two lines above were synonymous - they're obviously not! > >Two things I can think of: > >1) With "cat" the output file is created/handled by the shell, whereas "cp" >is doing its own file creation. You should see what's going on by: > strace cat ding.wav > /dev/dsp > strace cp ding.wav /dev/dsp > >2) Cat is trying to expand sparse files and perhaps it thinks of your >ding.wav as containing sparse data? > >Also, I would guess, that the dsp driver should handle bit streamed input >differently than a block copy/dump?
Actually it was the improper passing of /dev/dsp file data to an execed process that was the problem. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
