[Boost-users] Valgrind false positive in make_shared

Subject: [Boost-users] Valgrind false positive in make_shared
From: Dave Steffen (dave.steffen_at_[hidden])
Date: 2010-11-18 11:51:04

Peter Dimov wrote:
> Frank Mori Hess wrote:
> > Another bit of info: getting rid of the static_cast in
> > boost::detail::sp_forward makes both the compiler warning and valgrind
> > error go away, although I have no idea why.
> 
> Interesting... which version of GCC? Without the static_cast, it shouldn't
> compile, as rvalue references no longer bind to lvalues. In fact, I see that
> I added the static_cast in [61574] for that very reason.

  I got this bad behavior with GCC 4.4.4.  It goes away with GCC
  4.2.4.  

  These are the only two compilers I have at hand at the moment, but I
  can try others if it would be useful. I get very nervous when
  Valgrind is unhappy -- it's the only tool for such things that we've
  ever found to work worth a damn. :-)

  Thanks for looking in to this.

-- 
Dave Steffen, Ph.D. - Software Engineer
Numerica Corporation <http://www.numerica.us>
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Email: dave.steffen_at_[hidden]
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