2031589 - Update coding style guide's list of C++ features now allowed with C++20

Status: RESOLVED FIXED

(Core :: General, task)

Comment 1

[Chris Peterson [:cpeterson]]

Attachment: Bug 2031589 - Update coding style guide's list of C++ features now allowed with C++20. r?#firefox-build-docs-reviewers,nika

• Default member-initializers for bit fields are now supported in C++20.

• [[attributes]] have been used for a while now.

• std::thread_local is allowed now that Firefox Android's minimum
  Android version is 8 (bug 1978592).

• Concepts are supported in C++20.

• constexpr lambdas have been supported since C++17.

• Designated initializers are supported in C++20.

• std::format (C++20) is not fully supported in GCC libstdc++ until GCC
  13. Use the fmt/format.h library instead.

• Coroutines aren't allowed because Clang doesn't support them on
  Windows.

Comment 2

[Chris Peterson [:cpeterson]]

Attachment: Bug 2031589 - Fix formatting of the coding style guide's Algorithms table. r?#firefox-build-docs-reviewers

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/cd81caf08035
https://hg.mozilla.org/integration/autoland/rev/5f6524f547a6
Update coding style guide's list of C++ features now allowed with C++20. r=nika,firefox-build-system-reviewers,glandium
https://github.com/mozilla-firefox/firefox/commit/6a365bf36bdb
https://hg.mozilla.org/integration/autoland/rev/a496587c6a44
Fix formatting of the coding style guide's Algorithms table. r=firefox-build-system-reviewers,glandium

Comment 4

[rperta]

https://hg.mozilla.org/mozilla-central/rev/5f6524f547a6
https://hg.mozilla.org/mozilla-central/rev/a496587c6a44