bin/167103: dtrace(1) generates core dump trying to build perl with dtrace enabled

[Mark Johnston]

The following reply was made to PR bin/167103; it has been noted by GNATS.

From: Mark Johnston <markjdb at gmail.com>
To: bug-followup at FreeBSD.org, swills at FreeBSD.org
Cc:  
Subject: Re: bin/167103: dtrace(1) generates core dump trying to build perl
 with dtrace enabled
Date: Tue, 8 Jan 2013 19:27:29 -0500

 I've spent some more time digging into this and found a simple way to
 reproduce it. The problem only seems to occur when a probe is located in
 a static function. Some comments in dt_link.c indicate that there's some
 special handling that's needed in this case, but I still don't quite
 understand what's causing the problem.
 
 I've placed a simple provider definition and sample program that
 reproduce the issue here:
 http://people.freebsd.org/~markj/dtrace/bin167103/
 
 When the repro program is built, dtrace(1) will segfault when processing
 the object file. When the patch attached to the PR is applied, dtrace
 will just exit with a generic error:
 
 dtrace -G -s provider.d repro.o
 provider: failed to link script provider: an error was encountered while processing repro.o
 *** [beforelinking] Error code 1
 
 I'm still working on figuring this out.
 
 Thanks,
 -Mark