fn parse_rust_feature_flag<'a>(
sess: &'a Session,
err_callback: impl Fn(&'a str),
callback: impl FnMut(&'a str, FxHashSet<&'a str>, bool),
)
Expand description
Parse the value of -Ctarget-feature
, also expanding implied features,
and call the closure for each (expanded) Rust feature. If the list contains
a syntactically invalid item (not starting with +
/-
), the error callback is invoked.