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-rw-r--r--numpy/core/memmap.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/numpy/core/memmap.py b/numpy/core/memmap.py
index 5be45affd..315825b9f 100644
--- a/numpy/core/memmap.py
+++ b/numpy/core/memmap.py
@@ -236,10 +236,11 @@ class memmap(ndarray):
raise ValueError("Size of available data is not a "
"multiple of the data-type size.")
size = bytes // _dbytes
- shape = (size,)
+ shape = (np.uint64(size),)
else:
if not isinstance(shape, tuple):
shape = (shape,)
+ shape = tuple(map(lambda x: np.uint64(x), shape)) # Force-promote to uint64, prevent possible overflow
size = 1
for k in shape:
size *= k