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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/lib.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/lib.rs')
| -rw-r--r-- | src/libsyntax_ext/lib.rs | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs index dacc54d272b..719f9a4b3fd 100644 --- a/src/libsyntax_ext/lib.rs +++ b/src/libsyntax_ext/lib.rs @@ -60,7 +60,7 @@ pub fn register_builtins(resolver: &mut dyn syntax::ext::base::Resolver, NormalTT { expander: Box::new($f as MacroExpanderFn), def_info: None, - allow_internal_unstable: Vec::new(), + allow_internal_unstable: None, allow_internal_unsafe: false, local_inner_macros: false, unstable_feature: None, @@ -103,9 +103,9 @@ pub fn register_builtins(resolver: &mut dyn syntax::ext::base::Resolver, NormalTT { expander: Box::new(format::expand_format_args), def_info: None, - allow_internal_unstable: vec![ + allow_internal_unstable: Some(vec![ Symbol::intern("fmt_internals"), - ], + ].into()), allow_internal_unsafe: false, local_inner_macros: false, unstable_feature: None, @@ -115,9 +115,9 @@ pub fn register_builtins(resolver: &mut dyn syntax::ext::base::Resolver, NormalTT { expander: Box::new(format::expand_format_args_nl), def_info: None, - allow_internal_unstable: vec![ + allow_internal_unstable: Some(vec![ Symbol::intern("fmt_internals"), - ], + ].into()), allow_internal_unsafe: false, local_inner_macros: false, unstable_feature: None, |