[with patch] 2.8.7-alpha0: many segfaults when running doctests on 32-bit x86 Linux

[cwitty]

On my laptop, many of the doctests crash with SIGSEGV. Here's one example:

sage -t  devel/sage-main/sage/categories/category_types.py  

------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occured in SAGE.
This probably occured because a *compiled* component
of SAGE has a bug in it (typically accessing invalid memory)
or is not properly wrapped with _sig_on, _sig_off.
You might want to run SAGE under gdb with 'sage -gdb' to debug this.
SAGE will now terminate (sorry).
------------------------------------------------------------


A mysterious error (perphaps a memory error?) occurred, which may have crashed doctest.
         [1.0 s]

My laptop is 32-bit x86 Debian testing. I think probably Jaap Spies is seeing the same thing on Fedora 7 (his report on the mailing list doesn't have enough detail to be positive).

[cwitty]

There was a copy-and-paste error that ended up reading uninitialized local variables, causing crashes on some machines. Remove this incorrect, redundant code.