7d60d8b563
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
28 lines
324 B
Text
28 lines
324 B
Text
def f (x : Nat) : Nat :=
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if h : x > 0 then
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g x + 2
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else
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1
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where
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g : Nat → Nat
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| 0 => 2
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| x => f x * 2
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#check f
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#check f.g
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#eval! f 0
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#eval! f.g 0
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inductive Foo where
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| a | b | c
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deriving Repr
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def h (x : Nat) : Foo :=
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match x with
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| 0 => Foo.a
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| 1 => Foo.b
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| x => h x
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#check h
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#eval! h 0
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