Auto merge of #59513 - Centril:rollup, r=Centril

Rollup of 11 pull requests

Successful merges:

 - #58019 (Combine all builtin late lints and make lint checking parallel)
 - #59358 (Use `track_errors` instead of hand rolling)
 - #59394 (warn -> deny duplicate match bindings)
 - #59401 (bootstrap: build crates under libtest with -Z emit-stack-sizes)
 - #59423 (Visit path in `walk_mac`)
 - #59468 (musl: build toolchain libs with -fPIC)
 - #59476 (Use `SmallVec` in `TokenStreamBuilder`.)
 - #59496 (Remove unnecessary with_globals calls)
 - #59498 (Use 'write_all' instead of 'write' in example code)
 - #59503 (Stablize {f32,f64}::copysign().)
 - #59511 (Fix missed fn rename in #59284)

Failed merges:

r? @ghost

1 files changed, 2 insertions, 1 deletions

diff --git a/src/libsyntax/parse/attr.rs b/src/libsyntax/parse/attr.rs
index 4211268f33e..e99a86e807f 100644
--- a/src/libsyntax/parse/attr.rs
+++ b/src/libsyntax/parse/attr.rs
@@ -6,6 +6,7 @@ use crate::parse::parser::{Parser, TokenType, PathStyle};
 use crate::tokenstream::{TokenStream, TokenTree};
 
 use log::debug;
+use smallvec::smallvec;
 
 #[derive(Debug)]
 enum InnerAttributeParsePolicy<'a> {
@@ -171,7 +172,7 @@ impl<'a> Parser<'a> {
                 } else {
                     self.parse_unsuffixed_lit()?.tokens()
                 };
-                TokenStream::from_streams(vec![eq.into(), tokens])
+                TokenStream::from_streams(smallvec![eq.into(), tokens])
             } else {
                 TokenStream::empty()
             };