Cython + tuple unpacking

[Terry Reedy]

Hugues Salamin wrote:
> Hello,
> 
> The following code will crash with a segfault when compiled using cython (v0.11)
> 
> def func():
>     for (a, b) ,c ,d in zip(zip(range(3), range(3)), range(3), range(3)):
>         print a, b
>         print c
>         print d # This line segfault
> 
> Compilation is done using distutils.
> 
> If the module is imported in python and func is called, I got a segmentation
> fault at the line "print d".
> 
> I investigated the error with valgrind and gdb but I still have no clue what is
> going on.
> 
> I'm on Ubuntu 8.04, Kernel 2.6.24-22-generic

Since this is a Cython, not a Python, problem, report/ask this on the 
Cython list or bug tracker.