Strange dtrace warning on running svn, perl and other programs on stable/10 r310494

[Mark Johnston]

On Thu, Dec 29, 2016 at 12:04:56PM +0100, Trond Endrestøl wrote:
> I keep getting these warnings whenever I run svn, perl, and other 
> programs.
> 
> WARNING: number of probes fixed does not match the number of defined probes (16 != 18, respectively)
> WARNING: some probes might not fire or your program might crash
> 
> They also clobber the building of security/vpnc. Some "clever" Perl 
> script is being used to produce a .c file on stdout and a .h file on 
> stderr while building vpnc.

This is emitted by some code that registers userland DTrace probes
during process init. The mechanism used in stable/10 doesn't work in
some cases. This has been fixed in 11, but the change cannot easily be
merged back.

> 
> Any chance of getting rid of the messages, or at least disabling them?

If you're not planning on using the DTrace probes, the message can be
suppressed by setting DTRACE_DOF_INIT_DISABLE in the environment.

> 
> This is on stable/10, r310494.
> 
> /etc/make.conf contains:
> 
> STRIP=
> CFLAGS+=-fno-omit-frame-pointer
> WITH_CTF=1
> WITH_SSP_PORTS=yes
> 
> This particular system will soon be upgraded to stable/11, r310770. 
> Maybe my troubles will disappear once the transition is complete.

Indeed, this message is gone on stable/11.