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shuf: Refuse repeating zero lines #6011

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merged 1 commit into from
Feb 27, 2024

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BenWiederhake
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This was a GNU behavior bug:

$ LC_ALL=C shuf -er
shuf: no lines to repeat
[$? = 1]
$ cargo run shuf -er  # old, bad (unexpected success)
$ cargo run shuf -er  # new
shuf: no lines to repeat
[$? = 1]

Note that this bug already existed before #5980 and my other shuf-related PRs.

This should also fix the last testcase of the GNU shuf test.

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GNU testsuite comparison:

Congrats! The gnu test tests/shuf/shuf is no longer failing!

@sylvestre
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Excellent
Could you please add a test on our side?
We don't rely on gnu's (too long)
Thanks

@BenWiederhake
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BenWiederhake commented Feb 25, 2024

Sure thing!

EDIT: Fun fact, that revealed a bug I accidentally introduced recently. :D

@BenWiederhake
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Changes since last push:

  • Added tests. Thanks @sylvestre!
  • Note that I did NOT fix or test the other newly-discovered bug, since that's a whole new can of worms, see upcoming PR.

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GNU testsuite comparison:

Congrats! The gnu test tests/shuf/shuf is no longer failing!
Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)

This was a GNU behavior bug:

```console
$ LC_ALL=C shuf -er
shuf: no lines to repeat
[$? = 1]
$ cargo run shuf -er  # old, bad (unexpected success)
$ cargo run shuf -er  # new
shuf: no lines to repeat
[$? = 1]
```
@BenWiederhake
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Changes since last push:

Btw, I don't really understand what inotify-dir-recreate is about, but it seems unrelated for several reasons.

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GNU testsuite comparison:

Congrats! The gnu test tests/shuf/shuf is no longer failing!
Skipping an intermittent issue tests/tail/inotify-dir-recreate (passes in this run but fails in the 'main' branch)

@cakebaker cakebaker merged commit aa0d15d into uutils:main Feb 27, 2024
62 checks passed
@cakebaker
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Congrats! The gnu test tests/shuf/shuf is no longer failing!

Great, thanks!

@BenWiederhake BenWiederhake deleted the dev-shuf-repeat-zero-items branch February 27, 2024 21:51
BenWiederhake added a commit to BenWiederhake/coreutils-rs that referenced this pull request Feb 27, 2024
sylvestre pushed a commit to BenWiederhake/coreutils-rs that referenced this pull request Mar 9, 2024
zhitkoff added a commit to zhitkoff/coreutils that referenced this pull request Mar 12, 2024
* ci: use codecov token in CICD/GnuTests workflows

* tee: fail test if string setup fails

* sort: add skipped test for combined flags

Now that clap#2624 has been resolved, we can and should test both variants.

* cat: don't flake even on exotic pipe buffer sizes

See also 9995c63.

There is a race condition between the writing thread and the command.
It is easily possible that on the developer's machine, the writing
thread is always faster, filling the kernel's buffer of the stdin pipe,
thus succeeding the write. It is also easily possible that on the busy
CI machines, the child command runs first for whatever reason, and exits
early, thus killing the pipe, which causes the later write to fail. This
results in a flaky test. Let's prevent flaky tests.

* numfmt: don't flake even on exotic pipe buffer sizes

* split: don't flake even on exotic pipe buffer sizes

* simulate terminal utility (squash)

* workaround: run builds with retry (a)

* added configurable terminal size

* chore(deps): update rust crate rayon to 1.9

* cargo: fix feature = "cargo-clippy" deprecation

* tests/printf: Fix char_as_byte test, add char and string padding tests

* printf: Change get_char and write_padded to handle bytes instead of chars

* uucore/format: add padlen to spell-checker:ignore

* tests/printf: Verify the correct error behavior of printf when provided with '%0c' or '%0s'

* printf: Raise error on '%0c' and '%0s' formats

* cp: fix flaky test test_cp_arg_interactive_update, document adjacent bug

* chore(deps): update rust crate walkdir to 2.5

* cat: permit repeating command-line flags

* cat: fix -b and -n anti-symmetry

* cat: ignore -u flag, just like GNU does

* tests/common/util.rs: add cfg(feature = "env")

* cat: prefix two test fns with "test_"

* Bump mio from 0.8.10 to 0.8.11

* extend error message for case when writer instanciation fails second time

* Bump chrono from 0.4.34 to 0.4.35

* ls: use chrono::TimeDelta::try_seconds instead of

deprecated chrono::TimeDelta::seconds

* touch: replace use of deprecated chrono functions

* chmod: slightly adjust error message when preserve-root is triggered

One of the GNU tests checks for the exact error message.

* chgrp+chown: also trigger preserve-root during dirwalking, fix error message

This is explicitly tested in the GNU tests.

* uucore: drop unused function resolve_relative_path

This function is by necessity ill-defined: Depending on the context,
'..' is either the logical parent directory, sometimes the physical
parent directory. This function can only work for the latter case,
in which case `Path::canonicalize` is often a better approach.

* split: close as much fds as needed for opening new one

* use std::command::pre_exec() to set limits on child before exec

* chore(deps): update softprops/action-gh-release action to v2

* dd: treat arg as bytes if it contains 'B'

* Fix clippy warnings

* tr: stream output instead of buffering

This should lower memory consumption, and fixes OOM in some scenarios.

* shuf: fix and test off-by-one errors around ranges

* shuf: fix error message text on negative-sized ranges

Found by @cakebaker:
uutils#6011 (comment)

* chcon: allow overriding between --dereference and --no-dereference

* chcon: allow repeated flags and arguments

* touch: Respect -h when getting metadata (uutils#5951)

* Add tests that stat symlinks

* Check follow first in stat

* Don't run tests on FreeBSD

It would be possible to get them to run on FreeBSD by avoiding
get_symlink_times, but the behavior we're testing is not
platform-specific, so it's fine to not test it on FreeBSD.

---------

Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>

* pr: fix deprecation warnings & remove comment

* chgrp: fix clippy warning

* cut: allow non utf8 characters for delimiters (uutils#6037)

* cp: improve the support of --attributes-only (uutils#6051)

* cp: improve the support of --attributes-only

* remove useless comments

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

---------

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

* cp: Split the copy_file function a bit

* parser: if closing square bracket not found, stop looking for it again

This solves uutils#5584, where the fuzzing would take hours without this.

* Fix install: invalid link at destination
also remove some FixMEs for FreeBsd

* Bump nix from 0.27 to 0.28

* uucore/pipes: adapt to new return type of nix fn

nix 0.28 changed the return type of unistd::pipe() from Result<(RawFd, RawFd), Error> to Result<(OwnedFd, OwnedFd), Error>

* tty: unistd::ttyname takes AsFd instead of RawFd

change introduced by nix 0.28

* stty: remove ofill output flag

flag was removed from nix::sys::termios::OutputFlags in nix 0.28

* cat: adapt to type change of unistd::write()

nix 0.28 changed "write(fd: RawFd, buf: &[u8]) -> Result<usize>" to "write<Fd: AsFd>(fd: Fd, buf: &[u8]) -> Result<usize>"

* chore(deps): update rust crate blake3 to 1.5.1

---------

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>
Co-authored-by: Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
Co-authored-by: Ulrich Hornung <hornunguli@gmx.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>
Co-authored-by: Dimitris Apostolou <dimitris.apostolou@icloud.com>
Co-authored-by: Dorian Péron <dorianperon.i@gmail.com>
Co-authored-by: Terts Diepraam <terts.diepraam@gmail.com>
Co-authored-by: mhead <mtrxhead@protonmail.com>
Co-authored-by: Yash Thakur <45539777+ysthakur@users.noreply.github.com>
Co-authored-by: Zoltan Kiss <121870572+cj-zoltan-kiss@users.noreply.github.com>
zhitkoff added a commit to zhitkoff/coreutils that referenced this pull request Mar 12, 2024
* ci: use codecov token in CICD/GnuTests workflows

* tee: fail test if string setup fails

* sort: add skipped test for combined flags

Now that clap#2624 has been resolved, we can and should test both variants.

* cat: don't flake even on exotic pipe buffer sizes

See also 9995c63.

There is a race condition between the writing thread and the command.
It is easily possible that on the developer's machine, the writing
thread is always faster, filling the kernel's buffer of the stdin pipe,
thus succeeding the write. It is also easily possible that on the busy
CI machines, the child command runs first for whatever reason, and exits
early, thus killing the pipe, which causes the later write to fail. This
results in a flaky test. Let's prevent flaky tests.

* numfmt: don't flake even on exotic pipe buffer sizes

* split: don't flake even on exotic pipe buffer sizes

* simulate terminal utility (squash)

* workaround: run builds with retry (a)

* added configurable terminal size

* chore(deps): update rust crate rayon to 1.9

* cargo: fix feature = "cargo-clippy" deprecation

* tests/printf: Fix char_as_byte test, add char and string padding tests

* printf: Change get_char and write_padded to handle bytes instead of chars

* uucore/format: add padlen to spell-checker:ignore

* tests/printf: Verify the correct error behavior of printf when provided with '%0c' or '%0s'

* printf: Raise error on '%0c' and '%0s' formats

* cp: fix flaky test test_cp_arg_interactive_update, document adjacent bug

* chore(deps): update rust crate walkdir to 2.5

* cat: permit repeating command-line flags

* cat: fix -b and -n anti-symmetry

* cat: ignore -u flag, just like GNU does

* tests/common/util.rs: add cfg(feature = "env")

* cat: prefix two test fns with "test_"

* Bump mio from 0.8.10 to 0.8.11

* extend error message for case when writer instanciation fails second time

* Bump chrono from 0.4.34 to 0.4.35

* ls: use chrono::TimeDelta::try_seconds instead of

deprecated chrono::TimeDelta::seconds

* touch: replace use of deprecated chrono functions

* chmod: slightly adjust error message when preserve-root is triggered

One of the GNU tests checks for the exact error message.

* chgrp+chown: also trigger preserve-root during dirwalking, fix error message

This is explicitly tested in the GNU tests.

* uucore: drop unused function resolve_relative_path

This function is by necessity ill-defined: Depending on the context,
'..' is either the logical parent directory, sometimes the physical
parent directory. This function can only work for the latter case,
in which case `Path::canonicalize` is often a better approach.

* split: close as much fds as needed for opening new one

* use std::command::pre_exec() to set limits on child before exec

* chore(deps): update softprops/action-gh-release action to v2

* dd: treat arg as bytes if it contains 'B'

* Fix clippy warnings

* tr: stream output instead of buffering

This should lower memory consumption, and fixes OOM in some scenarios.

* shuf: fix and test off-by-one errors around ranges

* shuf: fix error message text on negative-sized ranges

Found by @cakebaker:
uutils#6011 (comment)

* chcon: allow overriding between --dereference and --no-dereference

* chcon: allow repeated flags and arguments

* touch: Respect -h when getting metadata (uutils#5951)

* Add tests that stat symlinks

* Check follow first in stat

* Don't run tests on FreeBSD

It would be possible to get them to run on FreeBSD by avoiding
get_symlink_times, but the behavior we're testing is not
platform-specific, so it's fine to not test it on FreeBSD.

---------

Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>

* pr: fix deprecation warnings & remove comment

* chgrp: fix clippy warning

* cut: allow non utf8 characters for delimiters (uutils#6037)

* cp: improve the support of --attributes-only (uutils#6051)

* cp: improve the support of --attributes-only

* remove useless comments

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

---------

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

* cp: Split the copy_file function a bit

* parser: if closing square bracket not found, stop looking for it again

This solves uutils#5584, where the fuzzing would take hours without this.

* Fix install: invalid link at destination
also remove some FixMEs for FreeBsd

* Bump nix from 0.27 to 0.28

* uucore/pipes: adapt to new return type of nix fn

nix 0.28 changed the return type of unistd::pipe() from Result<(RawFd, RawFd), Error> to Result<(OwnedFd, OwnedFd), Error>

* tty: unistd::ttyname takes AsFd instead of RawFd

change introduced by nix 0.28

* stty: remove ofill output flag

flag was removed from nix::sys::termios::OutputFlags in nix 0.28

* cat: adapt to type change of unistd::write()

nix 0.28 changed "write(fd: RawFd, buf: &[u8]) -> Result<usize>" to "write<Fd: AsFd>(fd: Fd, buf: &[u8]) -> Result<usize>"

* chore(deps): update rust crate blake3 to 1.5.1

---------

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>
Co-authored-by: Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
Co-authored-by: Ulrich Hornung <hornunguli@gmx.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Sylvestre Ledru <sylvestre@debian.org>
Co-authored-by: Dimitris Apostolou <dimitris.apostolou@icloud.com>
Co-authored-by: Dorian Péron <dorianperon.i@gmail.com>
Co-authored-by: Terts Diepraam <terts.diepraam@gmail.com>
Co-authored-by: mhead <mtrxhead@protonmail.com>
Co-authored-by: Yash Thakur <45539777+ysthakur@users.noreply.github.com>
Co-authored-by: Zoltan Kiss <121870572+cj-zoltan-kiss@users.noreply.github.com>
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3 participants