lean4-htt/tests/elab/1785.lean
Garmelon 08eb78a5b2
chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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/-!
# Improve compiler IR check message for users when constants are not compiled
-/
/-
This is a simplified version of the example in #1785.
Note that the error changes if the typeclass argument is removed.
-/
noncomputable
def char (R : Type) [∀ n, OfNat R n] : Nat := 0
/--
error: failed to compile definition, consider marking it as 'noncomputable'
because it depends on 'char', which is 'noncomputable'
-/
#guard_msgs in
def bug (R : Type) [∀ n, OfNat R n] : R :=
match char R with
| 0 => 1
| _ => 0