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Auto merge of #115418 - Zoxc:freeze-source, r=oli-obk

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Use `Freeze` for `SourceFile`

This uses the `Freeze` type in `SourceFile` to let accessing `external_src` and `lines` be lock-free.

Behavior of `add_external_src` is changed to set `ExternalSourceKind::AbsentErr` on a hash mismatch which matches the documentation. `ExternalSourceKind::Unneeded` was removed as it's unused.

Based on https://github.com/rust-lang/rust/pull/115401.
This commit is contained in:
bors 2023-09-08 17:20:23 +00:00
commit 26f4b72724
16 changed files with 294 additions and 225 deletions
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2
compiler/rustc_errors/src/lib.rs
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@ -273,7 +273,7 @@ impl CodeSuggestion {
assert!(!lines.lines.is_empty() || bounding_span.is_dummy());
// We can't splice anything if the source is unavailable.
if !sm.ensure_source_file_source_present(lines.file.clone()) {
if !sm.ensure_source_file_source_present(&lines.file) {
return None;
}