lean4-htt/tests/lean/run/4306.lean
jrr6 62f14514da
refactor: update built-in tactic error messages (#9633)
This PR updates various error messages produced by or associated with
built-in tactics and adapts their formatting to current conventions.
2025-07-31 14:16:57 +00:00

21 lines
495 B
Text

/--
info: 12776324570088369205
-/
#guard_msgs in
#eval (123456789012345678901).toUInt64
/--
info: 12776324570088369205
-/
#guard_msgs in
#eval (123456789012345678901).toUInt64.toNat
/--
error: Tactic `native_decide` evaluated that the proposition
(Nat.toUInt64 123456789012345678901).toNat = 123456789012345678901
is false
-/
#guard_msgs in
theorem false : False := by
have : (123456789012345678901).toUInt64.toNat = 123456789012345678901 := by native_decide
simp [Nat.toUInt64] at this