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-rw-r--r--tests/lean/misc-external/Base/Primitives.lean3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/lean/misc-external/Base/Primitives.lean b/tests/lean/misc-external/Base/Primitives.lean
index 034f41b2..4a66a453 100644
--- a/tests/lean/misc-external/Base/Primitives.lean
+++ b/tests/lean/misc-external/Base/Primitives.lean
@@ -49,6 +49,9 @@ deriving Repr, BEq
open Result
+instance Result_Inhabited (α : Type u) : Inhabited (Result α) :=
+ Inhabited.mk (fail panic)
+
/- HELPERS -/
def ret? {α: Type} (r: Result α): Bool :=