ebd22c96ee
This PR ensures that failure in initial compilation marks the relevant definitions as `noncomputable`, inside and outside `noncomputable section`, so that follow-up errors/noncomputable markings are detected in initial compilation as well instead of somewhere down the pipeline. This may require additional `noncomputable` markers on definitions that depend on definitions inside `noncomputable section` but accidentally passed the new computability check. Reported at https://leanprover.zulipchat.com/#narrow/channel/270676-lean4/topic/Cryptic.20error.20message.20in.20new.20lean.20toolchain.3F.
51 lines
969 B
Text
51 lines
969 B
Text
noncomputable section
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theorem ex : ∃ x : Nat, x > 0 :=
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⟨1, by decide⟩
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def a : Nat := Classical.choose ex
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def b : Nat := 0
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abbrev c : Nat := Classical.choose ex
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abbrev d : Nat := 1
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instance e : Inhabited Nat :=
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⟨a⟩
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instance f : Inhabited Nat :=
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⟨b⟩
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#eval b + d + f.default
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section Foo
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def g : Nat := Classical.choose ex
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def h (x : Nat) : Nat :=
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match x with
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| 0 => a
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| x+1 => h x + 1
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end Foo
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end
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/--
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error: failed to compile definition, consider marking it as 'noncomputable' because it depends on 'Classical.choose', which is 'noncomputable'
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-/
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#guard_msgs in
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def i : Nat := Classical.choose ex
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/--
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error: failed to compile definition, consider marking it as 'noncomputable' because it depends on 'g', which is 'noncomputable'
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-/
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#guard_msgs in
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def j : Nat := g
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/--
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error: failed to compile definition, consider marking it as 'noncomputable' because it depends on 'i', which is 'noncomputable'
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-/
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#guard_msgs in
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def k : Nat := i
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