Re: Build issue utilizing Boost::regex

From: John Maddock (jz.maddock_at_[hidden])
Date: 2021-05-28 19:12:51

On 28/05/2021 17:41, Brad Smith via Boost-users wrote:
> Hi,
>
> I am trying to upgrade from Boost 1.73 to Boost 1.76 and down to only 
> one consumer left that will
> not build. This appears to be an issue with Boost::regex.
>
> I noticed this in the Boost 1.76 release notes..
>
> "Regex is now header only except in C++03 mode."
>
> Clang defaults to C++14, but I noticed BOOST_REGEX_CXX03 is defined. 
> The project does not
> specify a particular C++ version so it should be using C++14.

Are you defining BOOST_REGEX_RECURSIVE?  That would force it into 
legacy-mode.

>
> The functions below exist in the Boost 1.73 Boost::regex library but 
> not in the 1.76
> library.

Hmm, that's strange, do you have a test case?  We do test C++03 legacy 
mode in CI, so this should all still be working, plus nothing should 
actually have changed in those classes compared to 1.73.

Best, John.

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