[issue5282] mmap.resize and offset
Hirokazu Yamamoto
report at bugs.python.org
Tue Feb 17 06:35:51 CET 2009
Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:
I investigated more. Following code crashed with bus error on coLinux.
import mmap
def main():
align = mmap.ALLOCATIONGRANULARITY
with open("a.txt", "w") as f:
f.write("0" * align)
f.write("1" * align)
f.write("2" * align)
with open("a.txt", "r+") as f:
m = mmap.mmap(f.fileno(), align, offset=align*2)
m.resize(1)
print m[0] # bus error
if __name__ == '__main__':
main()
On windows, failed with AccessDenied. (32bit Win2000)
----------
type: behavior -> crash
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<http://bugs.python.org/issue5282>
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