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| author | Oliver Scherer <github35764891676564198441@oli-obk.de> | 2019-02-07 14:19:06 +0100 |
|---|---|---|
| committer | Oliver Scherer <github35764891676564198441@oli-obk.de> | 2019-02-11 15:08:17 +0100 |
| commit | b681433b9d40ce1d851d22bedb7ccb483bedda06 (patch) | |
| tree | 58553f5e5d930db8c101e2b698fa43ed38a09ee0 /src/libsyntax/ext/derive.rs | |
| parent | 1dba7cb20224b5bb3a22641b2f4f2f73e5157dee (diff) | |
| download | rust-b681433b9d40ce1d851d22bedb7ccb483bedda06.tar.gz rust-b681433b9d40ce1d851d22bedb7ccb483bedda06.zip | |
Use `Rc<[Symbol]>` instead of `Vec<Symbol>` to reduce # of allocs
Diffstat (limited to 'src/libsyntax/ext/derive.rs')
| -rw-r--r-- | src/libsyntax/ext/derive.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libsyntax/ext/derive.rs b/src/libsyntax/ext/derive.rs index 03d68f4257f..6df369133d0 100644 --- a/src/libsyntax/ext/derive.rs +++ b/src/libsyntax/ext/derive.rs @@ -58,10 +58,10 @@ pub fn add_derived_markers<T>(cx: &mut ExtCtxt<'_>, span: Span, traits: &[ast::P call_site: span, def_site: None, format: ExpnFormat::MacroAttribute(Symbol::intern(&pretty_name)), - allow_internal_unstable: vec![ + allow_internal_unstable: Some(vec![ Symbol::intern("rustc_attrs"), Symbol::intern("structural_match"), - ], + ].into()), allow_internal_unsafe: false, local_inner_macros: false, edition: hygiene::default_edition(), |