Issue #12848: The pure Python pickle implementation now treats object lengths as...

Patch by Serhiy Storchaka.

diff --cc Misc/NEWS
index 619a8517f4141eac572efcf219bf9e7b1babe296,f17cfea4d35c7af2d23e2e08897c9ba008e385ec..d7c424220c7d7446194ac08c29a43ab5b2b76e48
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -138,22 -94,10 +138,26 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #12848: The pure Python pickle implementation now treats object
+   lengths as unsigned 32-bit integers, like the C implementation does.
+   Patch by Serhiy Storchaka.
+ 
 +- Issue #16423: urllib.request now has support for ``data:`` URLs.  Patch by
 +  Mathias Panzenböck.
 +
 +- Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into
 +  an encrypted POP3 session, on supported servers.  Patch by Lorenzo Catucci.
 +
 +- Issue #4473: Add a POP3.capa() method to query the capabilities advertised
 +  by the POP3 server.  Patch by Lorenzo Catucci.
 +
 +- Issue #4473: Ensure the socket is shutdown cleanly in POP3.close().
 +  Patch by Lorenzo Catucci.
 +
 +- Issue #16522: added FAIL_FAST flag to doctest.
 +
 +- Issue #15627: Add the importlib.abc.SourceLoader.compile_source() method.
 +
  - Issue #16408: Fix file descriptors not being closed in error conditions
    in the zipfile module.  Patch by Serhiy Storchaka.