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Re: [Patch v1 2/3] t5318: replace use of /dev/zero with generate_zero_bytes

From
Eric Sunshine <sunshine@sunshineco.com>
Date
Feb 10, 2019, 02:07 UTC
Message-ID
<CAPig+cTMoYMmnHVuay_4RGr_FN-HWC1tN4TPDsNM4vKCH3GzXw@mail.gmail.com>
In-Reply-To
<20190209185930.5256-3-randall.s.becker@rogers.com>
On Sat, Feb 9, 2019 at 2:00 PM <randall.s.becker@rogers.com> wrote:
> This change removes the dependency on /dev/zero with generate_zero_bytes
> appending NUL values to blocks generating wrong signatures for test cases.

This commit message says what the patch does but not _why_. At minimum, it should explain that /dev/zero is not available on all platforms, therefore, not portable, and (perhaps) cite NonStop as an example.

Show 6 quoted lines
> Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
> ---
> diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
> @@ -383,7 +383,7 @@ corrupt_graph_and_verify() {
> -       dd if=/dev/zero of="$objdir/info/commit-graph" bs=1 seek="$zero_pos" count=$(($orig_size - $zero_pos)) &&
> +       generate_zero_bytes $(($orig_size - $zero_pos)) >> "$objdir/info/commit-graph" &&
Previous: randall.s.becker@rogers.comNext: Junio C Hamano
Message 19 of 24 in “2.21.0-rc0 test fixes resulting from use of /dev/zero”
  1. 0/3 2.21.0-rc0 test fixes resulting from use of /dev/zerorandall.s.becker@rogers.com, Feb 9, 2019
  2. 1/3 test-lib-functions.sh: add generate_zero_bytes functionrandall.s.becker@rogers.com, Feb 9, 2019
  3. Eric SunshineFeb 10, 2019
  4. Randall S. BeckerFeb 10, 2019
  5. Jeff KingFeb 12, 2019
  6. Eric SunshineFeb 12, 2019
  7. randall.s.becker@rogers.comFeb 12, 2019
  8. 3/3 t5562: replace /dev/zero with a pipe from generate_zero_bytesrandall.s.becker@rogers.com, Feb 9, 2019
  9. Eric SunshineFeb 10, 2019
  10. Junio C HamanoFeb 12, 2019
  11. Johannes SixtFeb 12, 2019
  12. Junio C HamanoFeb 13, 2019
  13. t5562: do not depend on /dev/zeroMax Kirillov, Feb 15, 2019
  14. Randall S. BeckerFeb 15, 2019
  15. Junio C HamanoFeb 15, 2019
  16. Randall S. BeckerFeb 15, 2019
  17. Junio C HamanoFeb 15, 2019
  18. 2/3 t5318: replace use of /dev/zero with generate_zero_bytesrandall.s.becker@rogers.com, Feb 9, 2019
  19. Eric SunshineFeb 10, 2019
  20. Junio C HamanoFeb 12, 2019
  21. Junio C HamanoFeb 13, 2019
  22. Randall S. BeckerFeb 13, 2019
  23. Junio C HamanoFeb 13, 2019
  24. Randall S. BeckerFeb 13, 2019

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