Path is not beneath src/google/protobuf

[jkaye2012]

Attempting to upgrade protobuf using Bazel to commit a9b006bddd52e289029f16aa77b77e8e0033d9ee, we're seeing the following error:

(19:32:49) ERROR: /workspace/bazel-cache/external/com_google_protobuf/src/google/protobuf/BUILD.bazel:171:14: in @upb//bazel:upb_proto_library.bzl%_upb_proto_library_aspect aspect on proto_library rule @com_google_protobuf//src/google/protobuf:descriptor_proto: 
Traceback (most recent call last):
        File "/workspace/bazel-cache/external/upb/bazel/upb_proto_library.bzl", line 272, column 34, in _upb_proto_library_aspect_impl
                return _upb_proto_aspect_impl(target, ctx, "upb", _UpbWrappedCcInfo, _WrappedGeneratedSrcsInfo)
        File "/workspace/bazel-cache/external/upb/bazel/upb_proto_library.bzl", line 252, column 32, in _upb_proto_aspect_impl
                files = _compile_upb_protos(ctx, generator, proto_info, proto_info.direct_sources)
        File "/workspace/bazel-cache/external/upb/bazel/upb_proto_library.bzl", line 192, column 34, in _compile_upb_protos
                srcs = [_generate_output_file(ctx, name, ext + ".c") for name in proto_sources]
        File "/workspace/bazel-cache/external/upb/bazel/upb_proto_library.bzl", line 67, column 39, in _generate_output_file
                real_short_path = paths.relativize(real_short_path, ctx.label.package)
        File "/workspace/bazel-cache/external/bazel_skylib/lib/paths.bzl", line 186, column 17, in _relativize
                fail("Path '%s' is not beneath '%s'" % (path, start))
Error in fail: Path 'google/protobuf/descriptor.proto' is not beneath 'src/google/protobuf'

This appears to be entirely within the protobuf code itself, not having to do with out internal code. Here's the WORKSPACE settings that we're using:

git_repository(
    name = "com_google_protobuf",
    commit = "a9b006bddd52e289029f16aa77b77e8e0033d9ee",
    remote = "https://github.com/protocolbuffers/protobuf",
)

Any ideas about what could be going wrong here? Is this an issue with our local setup, or is there a problem in the upstream?

Thanks.

[honglooker]

Hi @jkaye2012, are you able to reproduce this on a toy repo based on bazel@a9b006bddd52e289029f16aa77b77e8e0033d9ee ?

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[kgreenek]

I am running into this same issue now after upgrading to the latest protobuf release (27.1). I'm wondering if you were able to figure out what was wrong.