[Bug 1213156] Re: 'pwdx pid 0' test case fails on arm64

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** Tags added: patch

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https://bugs.launchpad.net/bugs/1213156

Title:
  'pwdx pid 0' test case fails on arm64

Status in “procps” package in Ubuntu:
  New

Bug description:
  The "pwdx pid 0 should be invalid" test fails on arm64, which causes
  procps to FTBFS on this platform.

  dannf at arm64:~/procps-3.3.3$ runtest -a -de -v pwdx.test/pwdx.exp
  Expect binary is /usr/bin/expect
  Using /usr/share/dejagnu/runtest.exp as main test driver
  [...]
  Running ./pwdx.test/pwdx.exp ...
  PASS: pwdx no args
  FAIL: pwdx pid 0 should be invalid  <------- this one
  FAIL: pwdx finds sleep in cwd

                  ===  Summary ===

  # of expected passes            1
  # of unexpected failures        2

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