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Miguel Ángel
a7cc1d2cff
The test polled a pid file written by `echo $$ > path`, whose shell redirection creates (truncates) the file before the echo writes to it. A read landing in that window parsed an empty string to 0, which satisfied "not undefined" and exited the wait loop early, failing the next assertion with "expected 0 to be greater than 0" — the exact shape of the intermittent CI failure. The loop now only accepts a parsed value that's a positive integer, reproduced with a busy-wait harness that hit the empty-file race in most iterations and confirmed clean after the fix.