Stefan Krah <[email protected]> added the comment:
Okay, in memoryview the cast tests can trigger UB checks. memoryview assumes
that bool is packed correctly, so just casting does not work.
Casting anything to bool is of course a bit silly anyway.
diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
index 6178ffde7a..86cf4c309f 100644
--- a/Lib/test/test_buffer.py
+++ b/Lib/test/test_buffer.py
@@ -2758,6 +2758,8 @@ class TestBufferProtocol(unittest.TestCase):
tsize = struct.calcsize(tfmt)
n = prod(_tshape) * tsize
obj = 'memoryview' if is_byte_format(tfmt) else 'bytefmt'
+ if "?" in tfmt:
+ continue
for fmt, items, _ in iter_format(n, obj):
size = struct.calcsize(fmt)
shape = [n] if n > 0 else []
----------
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Python tracker <[email protected]>
<https://bugs.python.org/issue39689>
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