lean4-htt/tests/lean/run/lcnfEtaExpandBug.lean
Joachim Breitner 7d60d8b563
feat: safer #eval, and #eval! (#4810)
previously, `#eval` would happily evaluate expressions that contain
`sorry`, either explicitly or because of failing tactics. In conjunction
with operations like array access this can lead to the lean process
crashing, which isn't particularly great.

So how `#eval` will refuse to run code that (transitively) depends on
the `sorry` axiom (using the same code as `#print axioms`).

If the user really wants to run it, they can use `#eval!`.

Closes #1697
2024-07-23 15:26:56 +00:00

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import Lean
run_meta Lean.Compiler.compile #[``Lean.Elab.Command.elabEvalCoreUnsafe]