Re: [Boost-bugs] [Boost C++ Libraries] #10947: serialization singleton & sanitizer : null reference

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10947: serialization singleton & sanitizer : null reference
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-05-23 23:41:15

#10947: serialization singleton & sanitizer : null reference
--------------------------+------------------------------------------------
  Reporter:               |      Owner:  ramey
  vincent.dabir@…         |     Status:  closed
      Type:  Bugs         |  Component:  serialization
 Milestone:  To Be        |   Severity:  Problem
  Determined              |   Keywords:  singleton sanitizer null reference
   Version:  Boost        |
  1.56.0                  |
Resolution:  invalid      |
--------------------------+------------------------------------------------
Changes (by ramey):

 * status:  new => closed
 * resolution:   => invalid

Comment:

 I wasn't able to get the (address?) sanitizer working in my Xcode 6
 environment.  But I did trace through the program with the debugger.  line
 132 of singleton.hpp contains the line

 {{{
 use(instance);
 }}}

 where the value of instance has the (initialized value of zero).  This
 might be considered an error by the sanitizer, but use(...) is an empty
 function.  It is only included to guarantee that the singleton is called
 before main.  If this isn't included, compile for release may optimize
 away the pre-main invocation and the class may not function as intended.
 So I would call this an over zealous behavior of the sanitizer.  Or maybe
 the sanitizer could be considered not smart enough to trace one more level
 deep. or... what ever.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10947#comment:1>
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