malformed symbol

Hiroki Sato hrs at FreeBSD.org
Sat Dec 17 06:13:29 UTC 2016


"George Neville-Neil" <gnn at neville-neil.com> wrote
  in <0921189E-481D-4F8D-BAEA-6B656EE5ECFB at neville-neil.com>:

gn>
gn>
gn> On 15 Dec 2016, at 0:54, Hiroki Sato wrote:
gn>
gn> > Robert Mustacchi <rm at joyent.com> wrote
gn> >   in <6b0842f5-46e8-e90e-0cc6-ec0cbe74669a at joyent.com>:
gn> >
gn> > rm> On 12/14/16 14:51 , Hiroki Sato wrote:
gn> > rm> >  This was reproducible on 11.x and 12.x, not on 10.x.  Could anyone
gn> > rm> >  try this and let me know if this is reproducible on your 11.x or 12.x
gn> > rm> >  box?  I guess this is a regression of symbol rewrite routine such as
gn> > rm> >  s/__/-/ in the dtrace utility while I have not investigated the
gn> > rm> >  details yet.  Or am I missing something here?
gn> > rm>
gn> > rm> We've seen something similar on illumos that corresponds with newer
gn> > rm> binutils versions (2.26). See https://www.illumos.org/issues/6653.
gn> >
gn> >  Thank you for the info.  Certainly passing -no-integrated-as flag to
gn> >  clang to make it use an old gas avoids this issue. Simply doing
gn> >  objcopy sample.o before "dtrace -G" is another workaround.
gn> >
gn>
gn> Can you open a PR for this one, so we can track it?

 Sure.  I will.

-- Hiroki
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