From cf77da9fb5a0b23c92c5005b13944f680aa0f325 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Wed, 6 Mar 2013 01:09:24 +0100
Subject: Backed out changeset b9f7b1bf36aa

---
 Misc/NEWS               |  3 ---
 Objects/unicodeobject.c | 19 +++++++------------
 2 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/Misc/NEWS b/Misc/NEWS
index d858cd2..a0dd2f6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,9 +10,6 @@ What's New in Python 3.4.0 Alpha 1?
 Core and Builtins
 -----------------
 
-- Issue #17223: Fix PyUnicode_FromUnicode() on Windows (16-bit wchar_t type)
-  to reject invalid UTF-16 surrogate.
-
 - Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
   error message has been removed.  Patch by Ram Rachum.
 
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 00a6a36..2175655 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1384,18 +1384,13 @@ find_maxchar_surrogates(const wchar_t *begin, const wchar_t *end,
 
     for (iter = begin; iter < end; ) {
 #if SIZEOF_WCHAR_T == 2
-        if (Py_UNICODE_IS_HIGH_SURROGATE(iter[0])) {
-            if ((iter+1) < end
-                && Py_UNICODE_IS_LOW_SURROGATE(iter[1]))
-            {
-                ch = Py_UNICODE_JOIN_SURROGATES(iter[0], iter[1]);
-                ++(*num_surrogates);
-                iter += 2;
-            }
-            else {
-                PyErr_SetString(PyExc_ValueError, "illegal UTF-16 surrogate");
-                return -1;
-            }
+        if (Py_UNICODE_IS_HIGH_SURROGATE(iter[0])
+            && (iter+1) < end
+            && Py_UNICODE_IS_LOW_SURROGATE(iter[1]))
+        {
+            ch = Py_UNICODE_JOIN_SURROGATES(iter[0], iter[1]);
+            ++(*num_surrogates);
+            iter += 2;
         }
         else
 #endif
-- 
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