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Subject: [Bug 207735] www/firefox: DTRACE no longer works since 41.0
Date: Mon, 07 Mar 2016 03:44:22 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207735

Mark Johnston <markj@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |In Progress

--- Comment #3 from Mark Johnston <markj@FreeBSD.org> ---
DTrace allows the function component of a probe to be up to DTRACE_FUNCNAME=
LEN
- 1 =3D=3D 127 bytes in length and rejects DOF sections containing function=
s longer
than that.

DTRACE_FUNCNAMELEN is embedded into a few structs, so fixing this is
non-trivial. Doubling it would waste at least 128 bytes per probe, of which
there are typically tens of thousands, and still only pushes the problem ou=
t.
It's silly that DTrace imposes this limit at all. Constraints on provider a=
nd
probe name lengths make sense, and the module component is generally a
filename, so a limit is reasonable. But the function component is just a sy=
mbol
name, and ELF doesn't impose a limit here AFAIK.

I'll try to remove the limit.

--=20
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