Ignore transitive cppmap files from dotd files

When clang generates dotd files when using `-fmodule-map-file` any `extern module` directives in the modulemap are included in the dotd file if they exist. The result of this was that with sandboxing disabled the dotd file included transitive cppmap files that weren't in its input set, resulting in build failures. This change excludes those instead since they're not required as evidence by the fact that with sandboxing enabled they are not part of the input set.

Fixes https://github.com/bazelbuild/bazel/issues/21592

Closes #21832.

PiperOrigin-RevId: 656382428
Change-Id: I4bc9802884ce1bc66ceda65a602db8dffbd1d9ea
2 files changed
tree: bd09a33d135c0b226cf3d850e503b72d1d3f7bf0
  1. .bazelci/
  2. .github/
  3. examples/
  4. scripts/
  5. site/
  6. src/
  7. third_party/
  8. tools/
  9. .bazelrc
  10. .bazelversion
  11. .gitattributes
  12. .gitignore
  13. AUTHORS
  14. bazel_downloader.cfg
  15. BUILD
  16. CHANGELOG.md
  17. CODE_OF_CONDUCT.md
  18. CODEOWNERS
  19. combine_distfiles.py
  20. combine_distfiles_to_tar.sh
  21. compile.sh
  22. CONTRIBUTING.md
  23. CONTRIBUTORS
  24. distdir.bzl
  25. extensions.bzl
  26. LICENSE
  27. maven_install.json
  28. MODULE.bazel
  29. MODULE.bazel.lock
  30. rbe_extension.bzl
  31. README.md
  32. repositories.bzl
  33. requirements.txt
  34. SECURITY.md
  35. WORKSPACE.bzlmod
  36. workspace_deps.bzl
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