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Clean emitted diagnostics when reset_err_count is called. #47231

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Jan 9, 2018
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Clean emitted diagnostics when reset_err_count is called. #47231

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8 changes: 6 additions & 2 deletions src/librustc_errors/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -310,9 +310,13 @@ impl Handler {
self.continue_after_error.set(continue_after_error);
}

// NOTE: DO NOT call this function from rustc, as it relies on `err_count` being non-zero
// if an error happened to avoid ICEs. This function should only be called from tools.
/// Resets the diagnostic error count as well as the cached emitted diagnostics.
///
/// NOTE: DO NOT call this function from rustc. It is only meant to be called from external
/// tools that want to reuse a `Parser` cleaning the previously emitted diagnostics as well as
/// the overall count of emitted error diagnostics.
pub fn reset_err_count(&self) {
self.emitted_diagnostics.replace(FxHashSet());
self.err_count.store(0, SeqCst);
}

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