From f8ce3e2dae277baa2ef92e8a3e935953dc6c3f39 Mon Sep 17 00:00:00 2001 From: "Miss Islington (bot)" <31488909+miss-islington@users.noreply.github.com> Date: Thu, 12 Mar 2020 11:56:18 -0700 Subject: [PATCH] bpo-39689: Do not test undefined casts to _Bool (GH-18964) (#18966) - When casting to _Bool, arrays should only contain zeros or ones. (cherry picked from commit 1ae9cde4b2323235b5f9ff4bc76e4175a2257172) Co-authored-by: Stefan Krah --- Lib/test/test_buffer.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py index dd84faf371e7d6..dcea2063215040 100644 --- a/Lib/test/test_buffer.py +++ b/Lib/test/test_buffer.py @@ -2751,6 +2751,10 @@ def test_memoryview_cast_1D_ND(self): # be 1D, at least one format must be 'c', 'b' or 'B'. for _tshape in gencastshapes(): for char in fmtdict['@']: + # Casts to _Bool are undefined if the source contains values + # other than 0 or 1. + if char == "?": + continue tfmt = ('', '@')[randrange(2)] + char tsize = struct.calcsize(tfmt) n = prod(_tshape) * tsize