Revert change to explicitly specify length #67

Job	Run time
Interpreter (Debug)	7m 13s
Free-Threaded (Debug)	10m 19s
i686-pc-windows-msvc/msvc (Debug)	18m 41s
i686-pc-windows-msvc/msvc (Release)	20m 55s
x86_64-pc-windows-msvc/msvc (Debug)	17m 37s
x86_64-pc-windows-msvc/msvc (Release)	21m 27s
aarch64-pc-windows-msvc/msvc (Debug)	5m 51s
aarch64-pc-windows-msvc/msvc (Release)	6m 9s
x86_64-apple-darwin/clang (Debug)	16m 17s
x86_64-apple-darwin/clang (Release)	17m 54s
aarch64-apple-darwin/clang (Debug)	12m 11s
aarch64-apple-darwin/clang (Release)	13m 8s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 43s
x86_64-unknown-linux-gnu/gcc (Release)	17m 35s
x86_64-unknown-linux-gnu/clang (Debug)	7m 48s
x86_64-unknown-linux-gnu/clang (Release)	14m 4s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 14m 18s
aarch64-unknown-linux-gnu/gcc (Release)	36m 25s
aarch64-unknown-linux-gnu/clang (Debug)	1h 10m 47s
aarch64-unknown-linux-gnu/clang (Release)	38m 44s
	7h 16m 6s

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