fix: match discriminant reduction should not unfold irreducible defs
#2162
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Perhaps a cleaner approach would be to first call |
hrmacbeth
reviewed
Mar 22, 2023
| let d := Nat.gcd a.num 1 | ||
| ⟨(a.num.div d) * (b.num.div d)⟩ | ||
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| example : ((Foo.mul 4 1).mul 1).mul 1 = 4 := by decide |
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This fails both before and after this PR, but it goes from failing slowly to failing quickly. Is there a way to put a heartbeat limit on the test?
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I think you put the heartbeat limit on the wrong test!
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Yikes, thanks again. Now it's on both.
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gebner
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Mar 30, 2023
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This seems like a simple oversight to me: none of the functions special-cased in
canUnfoldAtMatcherare irreducible (and it would be quite weird if they were). Likewise, Mixing[match_pattern]and[irreducible]seems inadvisable.Fixes #2161