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Re: [PATCH 02/10] t7422: fix flaky test caused by buffered stdout

From
Junio C Hamano <gitster@pobox.com>
Date
Jan 7, 2025, 16:02 UTC
Message-ID
<xmqqr05evcht.fsf@gitster.g>
In-Reply-To
<20250107024829.GC2363@coredump.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 12 quoted lines
> So I think a simpler and more robust version is just this:
>
>   {
> 	{ yes || true; } &&
> 	command_expecting_sigpipe; echo $? >status
>   } | true
>
> We'll keep producing data in "yes" until the pipe is closed. So it will
> closed before command_expecting_sigpipe even starts, and there is no
> race there. And because we're using "true" on the right-hand side of the
> pipe, nothing is read at all from the pipe. So there's no guessing about
> how much might have been read.
;-)
> Like I said, this won't help our current situation, but after having
> spent a little time on it (before realizing that) I figured it was worth
> documenting.
It is always fun to ses these clever hacks on the list.
Thanks.
Previous: Jeff KingNext: Patrick Steinhardt
Message 12 of 57 in “A couple of CI improvements”
  1. 00/10 A couple of CI improvementsPatrick Steinhardt, Jan 3, 2025
  2. 01/10 t0060: fix EBUSY in MinGW when setting up runtime prefixPatrick Steinhardt, Jan 3, 2025
  3. 02/10 t7422: fix flaky test caused by buffered stdoutPatrick Steinhardt, Jan 3, 2025
  4. Jeff KingJan 3, 2025
  5. Patrick SteinhardtJan 6, 2025
  6. Jeff KingJan 7, 2025
  7. Patrick SteinhardtJan 7, 2025
  8. Patrick SteinhardtJan 7, 2025
  9. Jeff KingJan 9, 2025
  10. Junio C HamanoJan 9, 2025
  11. Jeff KingJan 7, 2025
  12. Junio C HamanoJan 7, 2025
  13. 03/10 github: adapt containerized jobs to be rootlessPatrick Steinhardt, Jan 3, 2025
  14. 05/10 github: simplify computation of the job's distroPatrick Steinhardt, Jan 3, 2025
  15. Junio C HamanoJan 3, 2025
  16. 06/10 gitlab-ci: remove the "linux-old" jobPatrick Steinhardt, Jan 3, 2025
  17. Junio C HamanoJan 3, 2025
  18. 04/10 github: convert all Linux jobs to be containerizedPatrick Steinhardt, Jan 3, 2025
  19. Jeff KingJan 3, 2025
  20. Jeff KingJan 3, 2025
  21. Patrick SteinhardtJan 6, 2025
  22. Junio C HamanoJan 3, 2025
  23. 07/10 gitlab-ci: add linux32 job testing against i386Patrick Steinhardt, Jan 3, 2025
  24. 08/10 ci: stop special-casing for Ubuntu 16.04Patrick Steinhardt, Jan 3, 2025
  25. 09/10 ci: use latest Ubuntu releasePatrick Steinhardt, Jan 3, 2025
  26. 10/10 ci: remove stale code for Azure PipelinesPatrick Steinhardt, Jan 3, 2025
  27. Jeff KingJan 3, 2025
  28. 00/10 A couple of CI improvementsPatrick Steinhardt, Jan 6, 2025
  29. 01/10 t0060: fix EBUSY in MinGW when setting up runtime prefixPatrick Steinhardt, Jan 6, 2025
  30. 03/10 github: adapt containerized jobs to be rootlessPatrick Steinhardt, Jan 6, 2025
  31. 02/10 t7422: fix flaky test caused by buffered stdoutPatrick Steinhardt, Jan 6, 2025
  32. Jeff KingJan 7, 2025
  33. 04/10 github: convert all Linux jobs to be containerizedPatrick Steinhardt, Jan 6, 2025
  34. 06/10 gitlab-ci: remove the "linux-old" jobPatrick Steinhardt, Jan 6, 2025
  35. 05/10 github: simplify computation of the job's distroPatrick Steinhardt, Jan 6, 2025
  36. 07/10 gitlab-ci: add linux32 job testing against i386Patrick Steinhardt, Jan 6, 2025
  37. 09/10 ci: use latest Ubuntu releasePatrick Steinhardt, Jan 6, 2025
  38. 08/10 ci: stop special-casing for Ubuntu 16.04Patrick Steinhardt, Jan 6, 2025
  39. 10/10 ci: remove stale code for Azure PipelinesPatrick Steinhardt, Jan 6, 2025
  40. 00/10 A couple of CI improvementsPatrick Steinhardt, Jan 10, 2025
  41. 01/10 t0060: fix EBUSY in MinGW when setting up runtime prefixPatrick Steinhardt, Jan 10, 2025
  42. 02/10 t7422: fix flaky test caused by buffered stdoutPatrick Steinhardt, Jan 10, 2025
  43. Christian CouderJan 24, 2025
  44. 04/10 github: convert all Linux jobs to be containerizedPatrick Steinhardt, Jan 10, 2025
  45. 03/10 github: adapt containerized jobs to be rootlessPatrick Steinhardt, Jan 10, 2025
  46. Christian CouderJan 24, 2025
  47. Johannes SchindelinAug 28, 2025
  48. Johannes SchindelinNov 17, 2025
  49. 05/10 github: simplify computation of the job's distroPatrick Steinhardt, Jan 10, 2025
  50. 06/10 gitlab-ci: remove the "linux-old" jobPatrick Steinhardt, Jan 10, 2025
  51. 07/10 gitlab-ci: add linux32 job testing against i386Patrick Steinhardt, Jan 10, 2025
  52. 08/10 ci: stop special-casing for Ubuntu 16.04Patrick Steinhardt, Jan 10, 2025
  53. 09/10 ci: use latest Ubuntu releasePatrick Steinhardt, Jan 10, 2025
  54. 10/10 ci: remove stale code for Azure PipelinesPatrick Steinhardt, Jan 10, 2025
  55. Jeff KingJan 10, 2025
  56. Christian CouderJan 24, 2025
  57. Patrick SteinhardtJan 27, 2025

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