coverage: Simplify the heuristic for ignoring async fn
return spans
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2 changed files with 14 additions and 17 deletions
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@ -44,6 +44,16 @@ pub(super) fn mir_to_initial_sorted_coverage_spans(
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.then_with(|| Ord::cmp(&a.is_closure, &b.is_closure).reverse())
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});
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// The desugaring of an async function includes a closure containing the
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// original function body, and a terminator that returns the `impl Future`.
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// That terminator will cause a confusing coverage count for the function's
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// closing brace, so discard everything after the body closure span.
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if let Some(body_closure_index) =
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initial_spans.iter().rposition(|covspan| covspan.is_closure && covspan.span == body_span)
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{
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initial_spans.truncate(body_closure_index + 1);
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}
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initial_spans
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}
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