From cb0101b8a8733900cae63e279c20286d73cdb440 Mon Sep 17 00:00:00 2001
From: Tom Augspurger <tom.w.augspurger@gmail.com>
Date: Wed, 25 Oct 2017 16:32:54 -0500
Subject: [PATCH] COMPAT: Update for NumPy dev

Closes https://github.com/pandas-dev/pandas/issues/17986

xref https://github.com/numpy/numpy/pull/9487
---
 pandas/io/packers.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pandas/io/packers.py b/pandas/io/packers.py
index 92270b39f56ef..abd258034af99 100644
--- a/pandas/io/packers.py
+++ b/pandas/io/packers.py
@@ -350,8 +350,11 @@ def unconvert(values, dtype, compress=None):
                 )
                 # fall through to copying `np.fromstring`
 
-    # Copy the string into a numpy array.
-    return np.fromstring(values, dtype=dtype)
+    # Copy the bytes into a numpy array.
+    buf = np.frombuffer(values, dtype=dtype)
+    buf = buf.copy()  # required to not mutate the original data
+    buf.flags.writeable = True
+    return buf
 
 
 def encode(obj):