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-rw-r--r--src/Data/Array/Mixed/XArray.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Data/Array/Mixed/XArray.hs b/src/Data/Array/Mixed/XArray.hs
index fa753bb..999ccc3 100644
--- a/src/Data/Array/Mixed/XArray.hs
+++ b/src/Data/Array/Mixed/XArray.hs
@@ -311,7 +311,7 @@ empty :: forall sh a. Storable a => IShX sh -> XArray sh a
empty sh
| Dict <- lemKnownNatRank sh
= XArray (S.constant (shxToList sh)
- (error "Data.Array.Mixed.empty: shape was not empty"))
+ (error $ "Data.Array.Mixed.empty: shape was not empty: " ++ show sh))
slice :: SNat i -> SNat n -> XArray (Just (i + n + k) : sh) a -> XArray (Just n : sh) a
slice i n (XArray arr) = XArray (S.slice [(fromSNat' i, fromSNat' n)] arr)