re-ran it with python-dbg, if it helps:
$ python-dbg
Python 2.7.9 (default, Apr 2 2015, 15:43:03)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from wand.image import Image
[79988 refs]
>>> a = Image(width=4,height=3)
Debug memory block at address p=0xb6f35618: API 'm'
64 bytes originally requested
The 3 pad bytes at p-3 are FORBIDDENBYTE, as expected.
The 4 pad bytes at tail=0xb6f35658 are not all FORBIDDENBYTE (0xfb):
at tail+0: 0x00 *** OUCH
at tail+1: 0x00 *** OUCH
at tail+2: 0xff *** OUCH
at tail+3: 0xff *** OUCH
The block was made by call #239078408 to debug malloc/realloc.
Data at p: 01 00 00 00 0d 00 00 00 ... 00 00 e2 bf 00 00 00 00
Fatal Python error: bad trailing pad byte
Aborted (core dumped)
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https://bugs.launchpad.net/bugs/1460358
Title:
double free or corruption
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