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| -rw-r--r-- | src/libsyntax/tokenstream.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/libsyntax/tokenstream.rs b/src/libsyntax/tokenstream.rs index b32049b1da8..cd906bb282b 100644 --- a/src/libsyntax/tokenstream.rs +++ b/src/libsyntax/tokenstream.rs @@ -59,6 +59,17 @@ where TokenStream: Send + Sync, {} +// These are safe since we ensure that they hold for all fields in the `_dummy` function. +// +// These impls are only here because the compiler takes forever to compute the Send and Sync +// bounds without them. +// FIXME: Remove these impls when the compiler can compute the bounds quickly again. +// See https://github.com/rust-lang/rust/issues/60846 +#[cfg(all(bootstrap, parallel_compiler))] +unsafe impl Send for TokenTree {} +#[cfg(all(bootstrap, parallel_compiler))] +unsafe impl Sync for TokenTree {} + impl TokenTree { /// Use this token tree as a matcher to parse given tts. pub fn parse(cx: &base::ExtCtxt<'_>, mtch: &[quoted::TokenTree], tts: TokenStream) |