[pypy-commit] pypy default: Document branch

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r85992:7d9e19e2e836
Date: 2016-08-02 18:15 +0200
http://bitbucket.org/pypy/pypy/changeset/7d9e19e2e836/

Log:	Document branch

diff --git a/pypy/doc/whatsnew-head.rst b/pypy/doc/whatsnew-head.rst
--- a/pypy/doc/whatsnew-head.rst
+++ b/pypy/doc/whatsnew-head.rst
@@ -109,3 +109,11 @@
 .. branch: jitlog-exact-source-lines
 
 Log exact line positions in debug merge points.
+
+.. branch: null_byte_after_str
+
+Allocate all RPython strings with one extra byte, normally unused.
+It is used to hold a final zero in case we need some ``char *``
+representation of the string, together with checks like ``not
+can_move()`` or object pinning. Main new thing that this allows:
+``ffi.from_buffer(string)``.