Bazel glob expression infinite-recursion bug
This repo demonstrates a bug where an infinite recursion is detected when
using glob through a directory traversal that should not happen based on
the exclude=[] arguments it is provided.
In this directory, the foo subdirectory contains a symlink called bar
to the parent directory, which is recursive and thus can cause traversal
problems. foo also contains a simple text file.
When we construct a glob expression that includes the contents of foo
in a wildcard expression, but specifically excludes bar, it still detects
an infinite recursion, even though there is no reason it should process the
bar symlink. This makes it impossible to exclude problematic subpaths.
To replicate:
$ bazel build //:broken
INFO: Invocation ID: cd200d1d-5e86-4556-9408-e19cadbadcaf
ERROR: infinite symlink expansion detected
[start of symlink chain]
/home/user/bazel-glob-bug
/home/user/bazel-glob-bug/foo/bar
[end of symlink chain]
ERROR: Skipping '//:broken': no such package '': Symlink issue while evaluating globs: Infinite symlink expansion: /home/user/bazel-glob-bug/foo/bar- > /home/user/bazel-glob-bug
WARNING: Target pattern parsing failed.
ERROR: no such package '': Symlink issue while evaluating globs: Infinite symlink expansion: /home/user/bazel-glob-bug/foo/bar- > /home/user/bazel-glob-bug
INFO: Elapsed time: 0.071s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (1 packages loaded)
Note that there is also a separate target that does not require or use this
glob expression at all: //:working. This just demonstrates that due to
the ordering of processing, any glob expression with this issue will
invalidate all neighboring build targets by interrupting evaluation of the
BUILD file.