[boost] Re: Patch for smart_ptr with Sun CC 5.3 to avoid compiler internal error

From: Daniel Frey (daniel.frey_at_[hidden])
Date: 2003-05-16 03:29:14

Baptiste Lepilleur wrote:
>     Sun CC 5.3 as a problem with the safe bool idiom, which result in a
> compiler internal error when bool conversion is used.
> 
>     The attached patch (based on boost 1.30) implements the work-around used
> by Boost.Function library for Sun CC 5.3 (implement a simple bool conversion
> operator).
> 
>     There is probably other libraries in boost that could use that
> work-around.

Maybe you want to add a private declaration for an operator int() with 
no definition in the work-around. I don't know if the SunCC accepts 
this, but I guess it should not stress the compiler too much. This will 
give you the same level of safety like the safe-bool-idiom, thus 
creating a really compatible work-around at the cost of some ugly error 
messages in case the users tries to convert to int, double or something. 
See also the bool_testable-implementation in the operators library and 
the according discussion in the list's archive.

Regards, Daniel

-- 
Daniel Frey
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