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Subject: Re: [boost] [Review] GGL review starts today, November 5th
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-11-19 15:42:25

Brandon Kohn wrote:
> template<typename ReturnType, typename Geometry, typename Strategy>
> struct calculate_null
> {
> static inline ReturnType apply(Geometry const& , Strategy const&)
> {
> return ReturnType();
> }
> };
> In my test ReturnType was double. This would seem to silently compile
> and return garbage on these inputs. In practice on vs2008(
> VC9 ) these
> return values were 0 (with optimizations on) even though the return
> resolves to double();. I'm guessing other platforms won't be so lucky.

That is well defined to return built-in types zero-initialized.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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