1fb4a32c8d
Asynchronous elaboration means that constants can exist in the elab environment while failing to be added to the kernel environment, avoid the latter by falling back to axioms there
31 lines
598 B
Text
31 lines
598 B
Text
import Lean.Elab.Tactic.Basic
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/-!
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Kernel errors should not lead to follow-up errors but should be detectable using `#print axioms`.
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-/
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/-- error: (kernel) declaration has metavariables 'bad' -/
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#guard_msgs in
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def bad : Empty := by
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run_tac do Lean.Elab.Tactic.popMainGoal
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theorem zero_eq_one : 0 = 1 := bad.elim
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/--
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info: def bad : Empty :=
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?_uniq.3
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-/
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#guard_msgs in
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set_option pp.raw true in
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#print bad
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/--
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info: theorem zero_eq_one : 0 = 1 :=
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Empty.elim bad
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-/
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#guard_msgs in
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#print zero_eq_one
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/-- info: 'zero_eq_one' depends on axioms: [bad] -/
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#guard_msgs in
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#print axioms zero_eq_one
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