The test simply attempts to attach to a multi-threaded process in which
threads are blocked on a file lock and thus sleeping in an SBDRY
|3059 ↗||(On Diff #28249)|
I think "./ptrace.XXXXXX" would be a better file path. I believe the test framework will clean up the working directory, whereas something in /tmp would be left if the test bails out before unlink()ing.