Banned C++ Features in Chromium

3 months ago

Chromium C++ style guide outlines supported and banned C++ language and library features.
New C++ standards are not immediately adopted; features are evaluated and allowed or banned based on toolchain support and discussion.
Proposals to change feature status can be submitted via email to [email protected], including rationale and previous discussions.
Third-party libraries may use banned features internally, but must meet Chromium's security and compiler support standards.
Specific C++11, C++17, C++20, and C++23 language and library features are listed as allowed or banned, with alternatives provided where applicable.
Abseil library features are also categorized, with some banned due to code size concerns or availability of alternatives in Chromium's base library.
Guidelines emphasize using Chromium's base library over Abseil or standard library features where conflicts or better alternatives exist.

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