Improve super initializer recovery

This CL addresses one of the issues in https://github.com/dart-lang/sdk/issues/34041
by fixing an AstBuilder crash and improving recovery of super constructor calls
in a constructor initializer list.

In addition, this adds a TestDescriptor adjustValidUnitBeforeComparison field
to support the new recovery tests.

Change-Id: I9e687aed34ea293700bd45d7c13ce36e83a00a05
Reviewed-on: https://dart-review.googlesource.com/73286
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Dan Rubel <danrubel@google.com>
7 files changed
tree: c7775581e2ff051669921679dd11238b35ca3019
  1. .clang-format
  2. .gitattributes
  3. .gitconfig
  4. .github/
  5. .gitignore
  6. .gn
  7. .mailmap
  8. .packages
  9. AUTHORS
  10. BUILD.gn
  11. CHANGELOG.md
  12. CONTRIBUTING.md
  13. DEPS
  14. LICENSE
  15. PATENTS
  16. PRESUBMIT.py
  17. README.dart-sdk
  18. README.md
  19. WATCHLISTS
  20. build/
  21. client/
  22. codereview.settings
  23. dartdoc_options.yaml
  24. docs/
  25. pkg/
  26. runtime/
  27. samples-dev/
  28. samples/
  29. sdk/
  30. tests/
  31. third_party/
  32. tools/
  33. utils/
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