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Add -Z allow_features=... flag

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This commit is contained in:
Tyler Mandry
2019-03-13 16:29:24 -07:00
parent fa8fd3daa7
commit 7c59ce9f5d
9 changed files with 85 additions and 4 deletions
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6
src/libsyntax/config.rs
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@@ -24,8 +24,8 @@ pub struct StripUnconfigured<'a> {
}
// `cfg_attr`-process the crate's attributes and compute the crate's features.
pub fn features(mut krate: ast::Crate, sess: &ParseSess, edition: Edition)
-> (ast::Crate, Features) {
pub fn features(mut krate: ast::Crate, sess: &ParseSess, edition: Edition,
allow_features: &Option<Vec<String>>) -> (ast::Crate, Features) {
let features;
{
let mut strip_unconfigured = StripUnconfigured {
@@ -43,7 +43,7 @@ pub fn features(mut krate: ast::Crate, sess: &ParseSess, edition: Edition)
return (krate, Features::new());
}
features = get_features(&sess.span_diagnostic, &krate.attrs, edition);
features = get_features(&sess.span_diagnostic, &krate.attrs, edition, allow_features);
// Avoid reconfiguring malformed `cfg_attr`s
if err_count == sess.span_diagnostic.err_count() {