Backport "Coverage: mark case bodies as branches; don't ignore branches with synthetic spans" to LTS #19232
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…nthetic spans Marking bodies of CaseDefs as branches seems like an uncontroversial change, it was probably an oversight. Not ignoring synthetic spans when creating coverage calls in branches seems like a good trade off. There might be some auto-generated `else ()` interpreted as branches, but Scala introduces quite a lot of synthetic trees that wrap non-synthetic trees (e.g. implicit classes). Also, it looks like Scala 2 includes those compiler-generated `else` branches in coverage. (Another possibility here would be to also check if the span is zero extent, but that approach would be different to the Scala 2 one) partial fix for lampepfl#16634 [Cherry-picked bcb2053]
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No regressions detected in the community build up to lts-18932. |
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Backports #18437 to the LTS branch.
PR submitted by the release tooling.
[skip ci]