[issue23985] Crash when deleting slices from duplicated bytearray

[Wolfgang Maier]

Wolfgang Maier added the comment:

Also happening with Python 3.4.0 on Ubuntu 14.04 (after ~ half a minute and A LOT of output):

[skipping lots of lines]
buf2: 29 13 bytearray(b'12312345678901231234567890123')
buf1: 25 9 bytearray(b'2345678901231234567890123')
buf2: 29 2 bytearray(b'12312345678901231234567890123')
buf1: 29 5 bytearray(b'12312345678901231234567890123')
buf2: 40 8 bytearray(b'3123456789012312345678901231234567890123')
buf1: 37 10 bytearray(b'3456789012312345678901231234567890123')
buf2: 45 31 bytearray(b'890123123456789012312345678901231234567890123')
buf1: 40 7 bytearray(b'3123456789012312345678901231234567890123')
buf2: 27 3 bytearray(b'312345678901231234567890123')
buf1: 46 9 bytearray(b'7890123123456789012312345678901231234567890123')
buf2: 37 6 bytearray(b'3456789012312345678901231234567890123')
buf1: 50 15 bytearray(b'34567890123123456789012312345678901231234567890123')
buf2: 44 5 bytearray(b'90123123456789012312345678901231234567890123')
buf1: 48 27 bytearray(b'567890123123456789012312345678901231234567890123')
buf2: 52 3 bytearray(b'1234567890123123456789012312345678901231234567890123')
buf1: 34 1 bytearray(b'6789012312345678901231234567890123')
buf2: 62 16 bytearray(b'45678901231234567890123123456789012312345678901231234567890123')
buf1: 46 13 bytearray(b'7890123123456789012312345678901231234567890123')
*** Error in `python3': realloc(): invalid pointer: 0x00007f2a45580000 ***

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nosy: +wolma

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<http://bugs.python.org/issue23985>
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