Index: Misc/NEWS
===================================================================
--- Misc/NEWS	(revision 85383)
+++ Misc/NEWS	(working copy)
@@ -315,6 +315,9 @@
 - Issue #9315: Fix for the trace module to record correct class name
   for tracing methods.
 
+- Issue #10076: Fix regression in 2.5 that prevented compiled regex patterns
+  from being copied.
+
 Extension Modules
 -----------------
 
Index: Lib/test/test_re.py
===================================================================
--- Lib/test/test_re.py	(revision 85383)
+++ Lib/test/test_re.py	(working copy)
@@ -1,4 +1,5 @@
 from test.test_support import verbose, run_unittest, import_module
+import copy
 import re
 from re import Scanner
 import sys, traceback
@@ -711,6 +712,14 @@
         self.assertRaises(TypeError, re.finditer, "a", {})
         self.assertRaises(OverflowError, _sre.compile, "abc", 0, [long_overflow])
 
+    def test_copy(self):
+        pattern1 = re.compile('a.c')
+        self.assertTrue(pattern1.match('abc'))
+        pattern2 = copy.copy(pattern1)
+        self.assertTrue(pattern2.match('abc'))
+        pattern3 = copy.deepcopy(pattern1)
+        self.assertTrue(pattern3.match('abc'))
+
 def run_re_tests():
     from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR
     if verbose:
Index: Modules/_sre.c
===================================================================
--- Modules/_sre.c	(revision 85383)
+++ Modules/_sre.c	(working copy)
@@ -2488,10 +2488,10 @@
     return pattern_subx(self, ptemplate, string, count, 1);
 }
 
+#ifdef USE_BUILTIN_COPY
 static PyObject*
 pattern_copy(PatternObject* self, PyObject *unused)
 {
-#ifdef USE_BUILTIN_COPY
     PatternObject* copy;
     int offset;
 
@@ -2510,16 +2510,13 @@
     copy->weakreflist = NULL;
 
     return (PyObject*) copy;
-#else
-    PyErr_SetString(PyExc_TypeError, "cannot copy this pattern object");
-    return NULL;
-#endif
 }
+#endif
 
+#ifdef USE_BUILTIN_COPY
 static PyObject*
 pattern_deepcopy(PatternObject* self, PyObject* memo)
 {
-#ifdef USE_BUILTIN_COPY
     PatternObject* copy;
 
     copy = (PatternObject*) pattern_copy(self);
@@ -2532,12 +2529,8 @@
         Py_DECREF(copy);
         return NULL;
     }
-
-#else
-    PyErr_SetString(PyExc_TypeError, "cannot deepcopy this pattern object");
-    return NULL;
-#endif
 }
+#endif
 
 PyDoc_STRVAR(pattern_match_doc,
 "match(string[, pos[, endpos]]) --> match object or None.\n\
@@ -2593,8 +2586,10 @@
 	pattern_finditer_doc},
 #endif
     {"scanner", (PyCFunction) pattern_scanner, METH_VARARGS},
+#ifdef USE_BUILTIN_COPY
     {"__copy__", (PyCFunction) pattern_copy, METH_NOARGS},
     {"__deepcopy__", (PyCFunction) pattern_deepcopy, METH_O},
+#endif
     {NULL, NULL}
 };