[Python-checkins] CVS: python/dist/src/Lib/test test_descr.py,1.113.4.1,1.113.4.2

[Michael Hudson]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv15359

Modified Files:
      Tag: release22-maint
	test_descr.py 
Log Message:
backport gvanrossum's checkin of
    revision 1.115 of test_descr.py

SF patch 514641 (Naofumi Honda) - Negative ob_size of LongObjects

Due to the bizarre definition of _PyLong_Copy(), creating an instance
of a subclass of long with a negative value could cause core dumps
later on.  Unfortunately it looks like the behavior of _PyLong_Copy()
is quite intentional, so the fix is more work than feels comfortable.

This fix is almost, but not quite, the code that Naofumi Honda added;
in addition, I added a test case.



I haven't quite worked out how to port the fix yet, but the test cases 
can go straight over.


Index: test_descr.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_descr.py,v
retrieving revision 1.113.4.1
retrieving revision 1.113.4.2
diff -C2 -d -r1.113.4.1 -r1.113.4.2
*** test_descr.py	4 Jan 2002 12:28:43 -0000	1.113.4.1
--- test_descr.py	5 Mar 2002 15:37:18 -0000	1.113.4.2
***************
*** 1749,1752 ****
--- 1749,1756 ----
      verify((0 + a).__class__ is long)
  
+     # Check that negative clones don't segfault
+     a = longclone(-1)
+     vereq(a.__dict__, {})
+ 
      class precfloat(float):
          __slots__ = ['prec']