shuf: Reduce malloc

[oech3]

No description provided.

[codspeed-hq]

Merging this PR will improve performance by 15.19%

⚡ 2 improved benchmarks
✅ 286 untouched benchmarks
⏩ 40 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Memory	shuf_input_range[1000000]	8.9 MB	7.7 MB	+15.19%
⚡	Simulation	shuf_input_range[1000000]	92.3 ms	85.9 ms	+7.44%

---

_{Comparing oech3:shuf-malloc (07c0b01) with main (de5c827)}

Footnotes

1. 40 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[oech3]

shuf_lines[100000]
-3%
27.6 ms -> 28.3 ms

[oech3]

Hmm, I can't fix shuf_lines[100000]. Should I undraft this as a trade-off?

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/cut/bounded-memory. tests/cut/bounded-memory is passing on 'main'. Maybe you have to rebase?
Note: The gnu test tests/printf/printf-surprise is now being skipped but was previously passing.
Congrats! The gnu test tests/cp/link-heap is now passing!

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/pr/bounded-memory (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/cp/link-heap is now passing!

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/date/date-locale-hour is no longer failing!
Note: The gnu test tests/unexpand/bounded-memory is now being skipped but was previously passing.

[anastygnome]

Good job!

[cakebaker]

Kudos for the performance improvement, thanks!