[Python-checkins] python/dist/src/Misc NEWS,1.337.2.4.2.84,1.337.2.4.2.85
tim_one@users.sourceforge.net
tim_one@users.sourceforge.net
Thu, 29 May 2003 12:26:09 -0700
Update of /cvsroot/python/python/dist/src/Misc
In directory sc8-pr-cvs1:/tmp/cvs-serv14517/Misc
Modified Files:
Tag: release22-maint
NEWS
Log Message:
Fleshed out the WeakKeyDictionary.__delitem__ news, since this can change
visible behavior.
Index: NEWS
===================================================================
RCS file: /cvsroot/python/python/dist/src/Misc/NEWS,v
retrieving revision 1.337.2.4.2.84
retrieving revision 1.337.2.4.2.85
diff -C2 -d -r1.337.2.4.2.84 -r1.337.2.4.2.85
*** NEWS 29 May 2003 19:21:38 -0000 1.337.2.4.2.84
--- NEWS 29 May 2003 19:26:06 -0000 1.337.2.4.2.85
***************
*** 15,18 ****
--- 15,30 ----
- Backport SF 742860: new, improved __delitem__ for WeakKeyDictionary.
+ This old __delitem__ wasn't threadsafe, was very inefficient (expected
+ time O(len(dict)) instead of O(1)), and could raise a spurious
+ RuntimeError if another thread mutated the dict during __delitem__, or if
+ a comparison function mutated it. It also neglected to raise KeyError
+ when the key wasn't present; didn't raise TypeError when the key wasn't
+ of a weakly referencable type; and broke various more-or-less obscure
+ dict invariants by using a sequence of equality comparisons over the
+ whole set of dict keys instead of computing the key's hash code to
+ narrow the search to those keys with the same hash code. All of these
+ are considered to be bugs. A new implementation of __delitem__ repairs
+ all that, but note that fixing these bugs may change visible behavior
+ in code relying (whether intentionally or accidentally) on old behavior.
- RPM spec file update from Sean Reifschneider.
***************
*** 201,207 ****
- Distutils: Translate spaces in the machine name to underscores
(Power Macintosh -> Power_Macintosh)
!
- Distutils: on Mac OS X don't use -R for runtime_library_dirs, use
! -L in stead (#723495).
- Backported SF #658233, continuation lines in .mo file metadata
--- 213,219 ----
- Distutils: Translate spaces in the machine name to underscores
(Power Macintosh -> Power_Macintosh)
!
- Distutils: on Mac OS X don't use -R for runtime_library_dirs, use
! -L in stead (#723495).
- Backported SF #658233, continuation lines in .mo file metadata