[Boost-bugs] [Boost C++ Libraries] #9813: [boost] [fusion] constexpr support

Subject: [Boost-bugs] [Boost C++ Libraries] #9813: [boost] [fusion] constexpr support
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-28 20:30:22

#9813: [boost] [fusion] constexpr support
------------------------------+---------------------
 Reporter:  gonzalobg88@…     |      Owner:  djowel
     Type:  Feature Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  fusion
  Version:  Boost 1.55.0      |   Severity:  Problem
 Keywords:  constexpr         |
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 Boost.MPL and Boost.Fusion are very useful inside C++14 relaxed constexpr
 functions. However, this doesn't work out of the box since constexpr
 functions can only call other constexpr functions.

 I have started to mark fusion and mpl functions and types as constexpr
 within my local Boost copy. This task is pretty big so I am only doing it
 for the parts of the library that I need to use within constexpr
 functions.

 It would be nice to know what is the best way to proceed (e.g. incremental
 patches until full support is achieved vs a single patch that enables
 constexpr support).

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/9813>
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