BIND 10 #1773: build failure with clang++ on MacOS Lion

[BIND 10 Development]

#1773: build failure with clang++ on MacOS Lion
-------------------------------------+-------------------------------------
            Reporter:  jinmei        |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  medium        |                       Status:  new
           Component:  build system  |                    Milestone:  Next-
           Sensitive:  0             |  Sprint-Proposed
         Sub-Project:  Core          |                     Keywords:
Estimated Difficulty:  0             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
-------------------------------------+-------------------------------------
 I suspect it's common for all variants of clang++ of the same version
 (mine is 3.1), but Lion is the only OS I'm using that has this version
 of clang++.

 It fails as follows:

 {{{
 In file included from message_renderer_bench.cc:In file included from
 rdatarender_bench.cc:22:
 ../../../../src/lib/bench/benchmark.h:213:62: error: binding reference
 member
       'target_' to stack allocated parameter 'target' [-Werror,-Wdangling-
 field]
         iterations_(iterations), sub_iterations_(0), target_(target)
                                                              ^~~~~~
 rdatarender_bench.cc:180:5: note: in instantiation of member function
 'isc::bench::BenchMark<<anonymous>::RdataRenderBenchMark<boost::shared_ptr<const
       isc::dns::rdata::Rdata> > >::BenchMark' requested here
 }}}

 I've already figured out how to avoid this (I'll soon commit a branch
 containing the initial fix).  The rest of the task is to complete it
 (I guess it's just some minor cleanups), get it reviewed and merge.

-- 
Ticket URL: <http://bind10.isc.org/ticket/1773>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development