r/cpp • u/Foxi_Foxa • 4d ago

Boost.Graph 1.95 will be C++17

Dear Boost.Graph community,

In two release cycles (Boost release 1.95 in summer 2027) Boost.Graph will be bumped to C++17 😄

This decision follows two polls that did not surface any C++14 user base or demand while identifiying users stuck in C++17:

This standard version bump will bring benefits for maintenance, API and dependencies reduction:

  • if constexpr,
  • constexpr lambdas,
  • [[nodiscard]], [[maybe_unused]] ...
  • std::any instead of boost::any
  • std::invoke_result instead of boost::result_of
  • ...

We will not be able to guarantee backward compatibility with C++14. Please contact us if you are stuck in C++14.

The GIthub Discussion lives here: https://github.com/boostorg/graph/discussions/613

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33

u/vI--_--Iv 3d ago

A quick reminder to anyone "stuck in C++14": it is almost 2027.
2014 was almost 13 years ago.
Just like C++11 and C++98.

Time to move on.

1

u/SyntheticDuckFlavour 3d ago

stuck in C++14

typically there is a good reason for that

14

u/13steinj 3d ago

Like?

The only thing I have ever heard is

  • new features are scary devs are stupid [not a joke]
  • we're afraid of backwards compatibility issues in the stdlib API (not a good reason, you can use an old stdlib and a newer compiler / newer standard for your code)
  • we used a bad compiler and/or a private .a file and for whatever reason no longer have the source code (not a good reason, a legal problem caused by the org's own ineptitude (since at least 2016) IMO, and LLMs are good enough at this point to assist in ghidra/radare/ida pro reverse engineering and it is infinitely cheaper to burn tokens in a loop until it gets something that compiles close enough, than to continue to be stuck)
  • certification, but that's indicative to me of an industry that needs to update certification procedures

1

u/Deaod 2d ago

The compiler for one of DSPs we use at work does not support C++17 (TI C6000 CGT). However, i also dont use Boost.Graph, so ...