Fix issue with certain synthetics missing in compiletime.typechecks #22978
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Previously, instead of using the PostTyper phase directly, a typed tree Transformer was used. However, it did not transform the ClassInfo values using PostTyper.transformInfo, which lead to RefChecks not finding certain synthesized methods, throwing an incorrect error about a missing implementation. This is fixed by running the full suite of PostTyper transforms. A minor refactor is included, to limit the repeated CompilationUnit construction and error checking.
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Previously, instead of using the
PostTyperphase directly, a typed treeTransformerwas used. However, it did not transform theClassInfovalues using thePostTyper.transformInfomethod, which lead toRefChecksnot finding certain synthesized methods, throwing an incorrect error about a missing implementation. This is fixed by running the full suite ofPostTypertransforms.A minor refactor is included, to limit the repeated CompilationUnit construction and error checking.
FIxes #22968