Merged revisions 75931 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r75931 | benjamin.peterson | 2009-10-28 20:49:07 -0500 (Wed, 28 Oct 2009) | 5 lines

  do a backport of r75928

  The added test does not fail without the patch, but we still fix the issue of
  surrogates being used in wide builds where they should not be.
........

2 files changed, 49 insertions, 39 deletions

diff --git a/Lib/test/test_pep263.py b/Lib/test/test_pep263.py
index a3a9ade0b6..e4faa9ff56 100644
--- a/Lib/test/test_pep263.py
+++ b/Lib/test/test_pep263.py
@@ -1,30 +1,37 @@
-#! -*- coding: koi8-r -*-

-

-import unittest

-from test import test_support

-

-class PEP263Test(unittest.TestCase):

-

-    def test_pep263(self):

-        self.assertEqual(

-            u"ðÉÔÏÎ".encode("utf-8"),

-            '\xd0\x9f\xd0\xb8\xd1\x82\xd0\xbe\xd0\xbd'

-        )

-        self.assertEqual(

-            u"\ð".encode("utf-8"),

-            '\\\xd0\x9f'

-        )

-

-    def test_compilestring(self):

-        # see #1882

-        c = compile("\n# coding: utf-8\nu = u'\xc3\xb3'\n", "dummy", "exec")

-        d = {}

-        exec c in d

-        self.assertEqual(d['u'], u'\xf3')

-

-

-def test_main():

-    test_support.run_unittest(PEP263Test)

-

-if __name__=="__main__":

-    test_main()

+# -*- coding: koi8-r -*-
+
+import unittest
+from test import test_support
+
+class PEP263Test(unittest.TestCase):
+
+    def test_pep263(self):
+        self.assertEqual(
+            u"ðÉÔÏÎ".encode("utf-8"),
+            '\xd0\x9f\xd0\xb8\xd1\x82\xd0\xbe\xd0\xbd'
+        )
+        self.assertEqual(
+            u"\ð".encode("utf-8"),
+            '\\\xd0\x9f'
+        )
+
+    def test_compilestring(self):
+        # see #1882
+        c = compile("\n# coding: utf-8\nu = u'\xc3\xb3'\n", "dummy", "exec")
+        d = {}
+        exec c in d
+        self.assertEqual(d['u'], u'\xf3')
+
+
+    def test_issue3297(self):
+        c = compile("a, b = '\U0001010F', '\\U0001010F'", "dummy", "exec")
+        d = {}
+        exec(c, d)
+        self.assertEqual(d['a'], d['b'])
+        self.assertEqual(len(d['a']), len(d['b']))
+
+def test_main():
+    test_support.run_unittest(PEP263Test)
+
+if __name__=="__main__":
+    test_main()
diff --git a/Python/ast.c b/Python/ast.c
index a3fdd8998d..b89e29c55c 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -3248,10 +3248,11 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons
                 u = NULL;
         } else {
                 /* check for integer overflow */
-                if (len > PY_SIZE_MAX / 4)
+                if (len > PY_SIZE_MAX / 6)
                         return NULL;
-                /* "\XX" may become "\u005c\uHHLL" (12 bytes) */
-                u = PyString_FromStringAndSize((char *)NULL, len * 4);
+		/* "<C3><A4>" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5
+		   "\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */
+                u = PyString_FromStringAndSize((char *)NULL, len * 6);
                 if (u == NULL)
                         return NULL;
                 p = buf = PyString_AsString(u);
@@ -3268,19 +3269,21 @@ decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, cons
                                 PyObject *w;
                                 char *r;
                                 Py_ssize_t rn, i;
-                                w = decode_utf8(c, &s, end, "utf-16-be");
+                                w = decode_utf8(c, &s, end, "utf-32-be");
                                 if (w == NULL) {
                                         Py_DECREF(u);
                                         return NULL;
                                 }
                                 r = PyString_AsString(w);
                                 rn = PyString_Size(w);
-                                assert(rn % 2 == 0);
-                                for (i = 0; i < rn; i += 2) {
-                                        sprintf(p, "\\u%02x%02x",
+                                assert(rn % 4 == 0);
+                                for (i = 0; i < rn; i += 4) {
+                                        sprintf(p, "\\U%02x%02x%02x%02x",
                                                 r[i + 0] & 0xFF,
-                                                r[i + 1] & 0xFF);
-                                        p += 6;
+                                                r[i + 1] & 0xFF,
+						r[i + 2] & 0xFF,
+						r[i + 3] & 0xFF);
+                                        p += 10;
                                 }
                                 Py_DECREF(w);
                         } else {