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fix: bring lengthTR lemma back into scope at toArray (#12502)

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This PR brings the `length = lengthTR` lemma back into scope after shake
mistakenly removed it.
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Henrik Böving 2026-02-16 14:33:10 +01:00 • committed by GitHub
parent f084ce1497
commit 620ef3bb86
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1
src/Init/Data/List/ToArrayImpl.lean
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@ -7,6 +7,7 @@ module
prelude
public import Init.Prelude
import Init.Data.List.Basic
public section

5
tests/lean/run/to_array_csimp.lean Normal file
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@ -0,0 +1,5 @@
/-! regression test against missing csimp lemmas in Init -/
/-- info: 300000 -/
#guard_msgs in
#eval (List.range (3 * 10 ^ 5)).toArray.size