[Numpy-discussion] Segfault using "fromstring" and reading variable length string

Gökhan Sever gokhansever at gmail.com
Fri Apr 22 17:52:05 EDT 2011

On Fri, Apr 22, 2011 at 12:37 PM, Ralf Gommers
<ralf.gommers at googlemail.com>wrote:

> On Thu, Apr 21, 2011 at 10:06 PM, Gökhan Sever <gokhansever at gmail.com>
> wrote:
> > Hello,
> > Given this piece of code (I can provide the meg file off-the list for
> those
> > who wants to reproduce the error)
> Can you instead construct a test as simple as possible for this? It
> sounds like you need only a two line string to reproduce this. The bug
> sounds similar to http://projects.scipy.org/numpy/ticket/1689.
> Ralf

This simple case segfaults as well (The commented line works correctly):

import numpy as np
from StringIO import StringIO

c = StringIO(" hello \r\n world \r\n")

dt = np.dtype([('line1', '|S6'), ('line2', np.object_)])
#dt = np.dtype([('line1', '|S9'), ('line2', '|S9')])
k = np.fromstring(c.read(dt.itemsize), dt)[0]

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