Hey James, > Should the middle case be failing? The users take on this was > "I said zero probes matched was okay, so its fine if that doesn't > match"
We did this intentionally because what the user typed there is always incorrect. While it's true that -Z means that it's fine that we matched no probes, in this case the user has specified a probe that isn't just absent now, but will _never_ be created. The intention of the -Z option is to catch probes that aren't yet created, but could be potentially. We don't want to allow the user to create a script that is necessarily incorrect. Adam On Nov 24, 2008, at 12:58 PM, James McIlree wrote: > > I think this is a bug, but I wanted to double check... > > A user reported that the -Z flag wasn't working correctly, > and I have narrowed it down to this test case (on Solaris): > > /* > * Fully specified, no errors > */ > /home/ovrskeek# dtrace -Z -n 'pid$target:libc.so.1:malloc:entry' -c ./ > simpledtrace: description 'pid$target:libc.so.1:malloc:entry' matched > 1 probe > > /* > * Fully specified, but function name is wrong > */ > /home/ovrskeek# dtrace -Z -n 'pid$target:libc.so.1:NoMatch:entry' - > c ./ > simpledtrace: invalid probe specifier pid$target:libc.so. > 1:NoMatch:entry: failed to lookup 'NoMatch' in module 'libc.so.1' > > /* > * Fully specified, function name and library name is wrong > */ > /home/ovrskeek# dtrace -Z -n 'pid$target:libc.NoMatch:NoMatch:entry' - > c ./simple > dtrace: description 'pid$target:libc.NoMatch:NoMatch:entry' matched 0 > probes > > Should the middle case be failing? The users take on this was > "I said zero probes matched was okay, so its fine if that doesn't > match" > > I originally thought it was an error due to being fully specified > (and wrong), but the final case is also fully specified and wrong, and > does > not issue an error. > > James M > > _______________________________________________ > dtrace-discuss mailing list > dtrace-discuss@opensolaris.org -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl _______________________________________________ dtrace-discuss mailing list dtrace-discuss@opensolaris.org
