On Mon, Oct 29, 2007 at 05:44:50PM -0700, James McIlree wrote:
Excellent. I wrote a wrapper script that emulates -G by just
emitting an
effectively empty object file. Is there some edge case in which that
technique would be insufficient?
The OS X linker will helpfully report an error if you pass it an
empty
object file. There are various things you can add to the object file
to suppress
the "nothing's here" warning. Depending on what flags you pass, you
should get away with "mostly empty" most of the time.
That's annoying.
Your insight about the is-enabled probes is on target, if you
attempt
to only use is-enabled probes, and never reference the actual dtrace
probe, you'll get link time errors.
I'm surprised the DTrace test suite didn't pick that up.
Specifically, this
guy should have failed:
usr/src/cmd/dtrace/test/tst/common/usdt/tst.onlyenabled.ksh
Do you have a bug filed on this or should I file one?
No radar on this yet. Do you know of any use cases for this kind of
construct?
The bug reporter thing seems to be down. We've used this to create
embedded test frameworks were we use DTrace to perform safe dynamic
instrumentation to effect error injection for example.
I take it you guys haven't been running the test suite?
Adam
19 messages in org.opensolaris.dtrace-discuss[dtrace-discuss] Missing -G flag in O...
