From 7efd5cf4cc6cd45f6114fdbc3fbfd619ddf03deb Mon Sep 17 00:00:00 2001
From: CJ Carey <perimosocordiae@gmail.com>
Date: Mon, 22 Sep 2014 14:30:36 -0400
Subject: BUG: np.unique with chararray + inverse_index

The call to `empty_like` was trying to use the `chararray` subclass,
which doesn't support the `np.intp` dtype.
---
 numpy/lib/arraysetops.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'numpy/lib/arraysetops.py')

diff --git a/numpy/lib/arraysetops.py b/numpy/lib/arraysetops.py
index bc80d0ecd..5c3b504de 100644
--- a/numpy/lib/arraysetops.py
+++ b/numpy/lib/arraysetops.py
@@ -204,7 +204,7 @@ def unique(ar, return_index=False, return_inverse=False, return_counts=False):
             ret += (perm[flag],)
         if return_inverse:
             iflag = np.cumsum(flag) - 1
-            inv_idx = np.empty_like(ar, dtype=np.intp)
+            inv_idx = np.empty(ar.shape, dtype=np.intp)
             inv_idx[perm] = iflag
             ret += (inv_idx,)
         if return_counts:
-- 
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