[Python-checkins] cpython (merge 3.5 -> default): Merge 3.5.

[stefan.krah]

https://hg.python.org/cpython/rev/1f253802435e
changeset:   99047:1f253802435e
parent:      99044:0632642c30dd
parent:      99046:f3d8bb3ffa98
user:        Stefan Krah <skrah at bytereef.org>
date:        Tue Nov 10 18:18:07 2015 +0100
summary:
  Merge 3.5.

files:
  Lib/test/test_buffer.py     |   5 +++++
  Lib/test/test_memoryview.py |   7 +++++++
  Objects/memoryobject.c      |  17 ++++++++++++++++-
  3 files changed, 28 insertions(+), 1 deletions(-)


diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
--- a/Lib/test/test_buffer.py
+++ b/Lib/test/test_buffer.py
@@ -841,6 +841,11 @@
                 # test tobytes()
                 self.assertEqual(result.tobytes(), b)
 
+                # test hex()
+                m = memoryview(result)
+                h = "".join("%02x" % c for c in b)
+                self.assertEqual(m.hex(), h)
+
                 # lst := expected multi-dimensional logical representation
                 # flatten(lst) := elements in C-order
                 ff = fmt if fmt else 'B'
diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py
--- a/Lib/test/test_memoryview.py
+++ b/Lib/test/test_memoryview.py
@@ -512,6 +512,13 @@
                 m[2:] = memoryview(p6).cast(format)[2:]
                 self.assertEqual(d.value, 0.6)
 
+    def test_memoryview_hex(self):
+        # Issue #9951: memoryview.hex() segfaults with non-contiguous buffers.
+        x = b'0' * 200000
+        m1 = memoryview(x)
+        m2 = m1[::-1]
+        self.assertEqual(m2.hex(), '30' * 200000)
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
--- a/Objects/memoryobject.c
+++ b/Objects/memoryobject.c
@@ -2156,8 +2156,23 @@
 memory_hex(PyMemoryViewObject *self, PyObject *dummy)
 {
     Py_buffer *src = VIEW_ADDR(self);
+    PyObject *bytes;
+    PyObject *ret;
+
     CHECK_RELEASED(self);
-    return _Py_strhex(src->buf, src->len);
+
+    if (MV_C_CONTIGUOUS(self->flags)) {
+        return _Py_strhex(src->buf, src->len);
+    }
+
+    bytes = memory_tobytes(self, dummy);
+    if (bytes == NULL)
+        return NULL;
+
+    ret = _Py_strhex(PyBytes_AS_STRING(bytes), Py_SIZE(bytes));
+    Py_DECREF(bytes);
+
+    return ret;
 }
 
 static PyObject *

-- 
Repository URL: https://hg.python.org/cpython