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merged 2 commits into from
Feb 19, 2025
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docs(dev): Update the feature-gate instructions #137227

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aecde19
docs(dev): Remove reference to features_untracked
epage Feb 18, 2025
5e92241
docs(dev): Access features as functions, not members
epage Feb 18, 2025
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4 changes: 1 addition & 3 deletions src/doc/rustc-dev-guide/src/implementing_new_features.md
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Expand Up @@ -167,9 +167,7 @@ a new unstable feature:

1. Prevent usage of the new feature unless the feature gate is set.
You can check it in most places in the compiler using the
expression `tcx.features().$feature_name` (or
`sess.features_untracked().$feature_name` if the
tcx is unavailable)
expression `tcx.features().$feature_name()`

If the feature gate is not set, you should either maintain
the pre-feature behavior or raise an error, depending on
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