[conda] nd.__repr__() hangs in the REPL

[skrah]

The following sequence hangs in the REPL and uses more than 1GB of memory
(tested only with the conda distribution):

Python 2.7.11 |Continuum Analytics, Inc.| (default, Dec 6 2015, 18:08:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
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from dynd import nd, ndt

a = nd.empty("10 * ?string")
a = nd.empty("10 * fixed_string[10]")
a
^C

[skrah]

I think the data of the fixed string isn't initialized, so the loop in
ndt::fixed_string_type::print_data() can be executed any number
of times since "data" isn't incremented.

Also, I think there's an invalid access in utf8::internal::sequence_length().

[skrah]

s/invalid access/use of uninitialized value/

[izaid]

@skrah Thanks! I'll check this out.

In general, there are a number of bugs in DyND right now, so if you find them just make an issue. If they really affect your work, let us know and we'll fix them ASAP.

[skrah]

Thanks! These shouldn't affect my work except that I have to suppress my curiosity when I find one. :)