Backport test fixes to 4.0.x#3005
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The Dir created by `Dir.new(Dir.pwd).fileno` was only referenced long enough to read its fileno, so it became collectable immediately. When GC ran between the assert_send_type calls the fd was closed, making the later `Dir.fchdir(fd)` fail with Errno::EBADF. Keep the Dir in a local and close it in ensure. Surfaced on ruby/ruby ZJIT CI with --enable-zjit=dev --zjit-call-threshold=1. https://github.com/ruby/ruby/actions/runs/27735384476/job/82051097840 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
test_for_fd has the same pattern as test_fchdir: the Dir from `Dir.new(Dir.pwd).fileno` is collectable before `Dir.for_fd(fd)` runs, so an ill-timed GC closes the fd and the call fails with Errno::EBADF. Keep the Dir alive in a local and close it in ensure. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Released bundlers (up to 4.0.11) reference Pathname::SEPARATOR_PAT, which became a private constant on ruby-head, causing bundle install to crash with NameError. The fix (ruby/rubygems#9529) is on master but not yet released. Use bundler's "version system" config to skip the lockfile-pinned 4.0.1 and use ruby-head's bundled bundler instead. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Backport test fixes needed for the 4.0.x release branch.
Original PRs:
Changes
Zlib::GzipReader.wrap.DirSingletonTest#test_fchdirandDirSingletonTest#test_for_fdrobust against aggressive GC.Testing
Not run locally. This will be tested in CI.