[bug #63071] Race condition in .WAIT tests.

[Dmitry Goncharov]

Follow-up Comment #1, bug #63071 (project make):

Test 11 of targets/WAIT fails due to a race.

++++
$ cat tests/work/targets/WAIT.diff.11
*** work/targets/WAIT.base.11   Wed Sep 14 18:37:08 2022
--- work/targets/WAIT.log.11    Wed Sep 14 18:37:08 2022
***************
*** 1,5 ****
- start-pre1
  pre2
  end-pre1
  start-npre1
  end-npre1
--- 1,5 ----
  pre2
+ start-pre1
  end-pre1
  start-npre1
  end-npre1
----

This happens, because the test does not impose any orderdering between pre1
and pre2.


Test 7 fails similarly
++++
$ cat tests/work/targets/WAIT.diff.7
*** work/targets/WAIT.base.7    Fri Sep 16 18:53:12 2022
--- work/targets/WAIT.log.7     Fri Sep 16 18:53:12 2022
***************
*** 1,3 ****
- start-pre1
  pre2
  end-pre1
--- 1,3 ----
  pre2
+ start-pre1
  end-pre1
----


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