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| author | John Kåre Alsaker <john.kare.alsaker@gmail.com> | 2017-12-03 14:37:23 +0100 |
|---|---|---|
| committer | John Kåre Alsaker <john.kare.alsaker@gmail.com> | 2018-03-17 23:01:46 +0100 |
| commit | 3fa69c935d2dc28207908987a3a3cb518ab7f62d (patch) | |
| tree | 7a2132900024e2fb9f7939ca57421672152f95b5 /src/libsyntax_pos/lib.rs | |
| parent | f53d4af223a5301daa6123c7b1e4cba108700db4 (diff) | |
| download | rust-3fa69c935d2dc28207908987a3a3cb518ab7f62d.tar.gz rust-3fa69c935d2dc28207908987a3a3cb518ab7f62d.zip | |
Make Span and Symbol implement Send and Sync
Diffstat (limited to 'src/libsyntax_pos/lib.rs')
| -rw-r--r-- | src/libsyntax_pos/lib.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs index bec46ff3d79..51da9a755ec 100644 --- a/src/libsyntax_pos/lib.rs +++ b/src/libsyntax_pos/lib.rs @@ -184,8 +184,12 @@ impl SpanData { } } -// The interner in thread-local, so `Span` shouldn't move between threads. +// The interner is pointed to by a thread local value which is only set on the main thread +// with parallelization is disabled. So we don't allow Span to transfer between threads +// to avoid panics and other errors, even though it would be memory safe to do so. +#[cfg(not(parallel_queries))] impl !Send for Span {} +#[cfg(not(parallel_queries))] impl !Sync for Span {} impl PartialOrd for Span { |