Re: [boost] BOOST_HAS_NRVO

From: John Maddock (jm_at_[hidden])
Date: 2002-11-11 07:29:02

>That was me, although I have no CVS write access and Dave applied the
>patch. Anyway, I will prepare a patch for
>http://www.boost.org/libs/config/config.htm#user_settable when I have
>some time. Anything else that needs to be done?

I don't think so, I'll apply the test program and some minimal docs when I
get a chance, I still worry that the test may only work for some compiler
settings, and that would really mess up the config regression tests, but I
guess we'll see :-)

> Is it possible to test for this?  If so can a test program be supplied
> please - the test program should compile and run only if the feature is
> available - see one of the boost_has_XXX.cxx files for examples.

>AFAICS, Terje's program is correctly detecting it. I agree to the rest
>of the discussion that this should be stable and independent of compiler
>flags. The "broken" NRVO of the Intel compiler is not a problem for
>operators.hpp, as it returns 'T' instead of 'const T', so the test
>matches the current use of the NRVO. Thanks Terje.

OK good.

Thanks,

John Maddock
http://ourworld.compuserve.com/homepages/john_maddock/index.htm