[Pyrex] c-code mis-interpretation

[sagetrac-joel]

I found a small bit of code that gets compiled incorrectly to c. A sample is:

def unlist():
        lst = [1,2]
        lst,m = lst

The translated c-code from this will produce an Unindexable exception. This
results from the fact that the variable "lst" is bound to the first element
of the list (the integer 1) before the second element is extracted
from "lst". Hence it tries to unpack from the integer rather than the list.

Component: interfaces

Issue created by migration from https://trac.sagemath.org/ticket/187

[sagetrac-mabshoff]

comment:1

This is a rather old bug. We should verify that the problem still exists.

tagged for 2.9, hopefully to be resolved during Sage Bug Day 2.

Cheers,

Michael

[williamstein]

comment:2

works for me now.