diff -r 0f663e0ce1d3 Doc/whatsnew/3.5.rst
--- a/Doc/whatsnew/3.5.rst	Tue Nov 18 17:30:50 2014 +0200
+++ b/Doc/whatsnew/3.5.rst	Tue Nov 18 19:14:09 2014 +0200
@@ -441,3 +441,7 @@ Changes in the C API
 
 * The :c:type:`PyMemAllocator` structure was renamed to
   :c:type:`PyMemAllocatorEx` and a new ``calloc`` field was added.
+
+* Removed non-documented macro :c:macro:`PyObject_REPR` which leaked references.
+  Use format character ``%R`` in :c:func:`PyUnicode_FromFormat`-like functions
+  to format the :func:`repr` of the object.
diff -r 0f663e0ce1d3 Include/object.h
--- a/Include/object.h	Tue Nov 18 17:30:50 2014 +0200
+++ b/Include/object.h	Tue Nov 18 19:14:09 2014 +0200
@@ -575,9 +575,6 @@ PyAPI_FUNC(PyObject *) PyObject_Dir(PyOb
 PyAPI_FUNC(int) Py_ReprEnter(PyObject *);
 PyAPI_FUNC(void) Py_ReprLeave(PyObject *);
 
-/* Helper for passing objects to printf and the like */
-#define PyObject_REPR(obj) _PyUnicode_AsString(PyObject_Repr(obj))
-
 /* Flag bits for printing: */
 #define Py_PRINT_RAW    1       /* No string quotes etc. */
 
diff -r 0f663e0ce1d3 Python/compile.c
--- a/Python/compile.c	Tue Nov 18 17:30:50 2014 +0200
+++ b/Python/compile.c	Tue Nov 18 19:14:09 2014 +0200
@@ -1414,12 +1414,12 @@ get_ref_type(struct compiler *c, PyObjec
         PyOS_snprintf(buf, sizeof(buf),
                       "unknown scope for %.100s in %.100s(%s)\n"
                       "symbols: %s\nlocals: %s\nglobals: %s",
-                      PyBytes_AS_STRING(name),
-                      PyBytes_AS_STRING(c->u->u_name),
-                      PyObject_REPR(c->u->u_ste->ste_id),
-                      PyObject_REPR(c->u->u_ste->ste_symbols),
-                      PyObject_REPR(c->u->u_varnames),
-                      PyObject_REPR(c->u->u_names)
+                      PyUnicode_AsUTF8(name),
+                      PyUnicode_AsUTF8(c->u->u_name),
+                      PyUnicode_AsUTF8(PyObject_Repr(c->u->u_ste->ste_id)),
+                      PyUnicode_AsUTF8(PyObject_Repr(c->u->u_ste->ste_symbols)),
+                      PyUnicode_AsUTF8(PyObject_Repr(c->u->u_varnames)),
+                      PyUnicode_AsUTF8(PyObject_Repr(c->u->u_names))
         );
         Py_FatalError(buf);
     }
@@ -1476,11 +1476,11 @@ compiler_make_closure(struct compiler *c
             fprintf(stderr,
                 "lookup %s in %s %d %d\n"
                 "freevars of %s: %s\n",
-                PyObject_REPR(name),
-                PyBytes_AS_STRING(c->u->u_name),
+                PyUnicode_AsUTF8(PyObject_Repr(name)),
+                PyUnicode_AsUTF8(c->u->u_name),
                 reftype, arg,
-                _PyUnicode_AsString(co->co_name),
-                PyObject_REPR(co->co_freevars));
+                PyUnicode_AsUTF8(co->co_name),
+                PyUnicode_AsUTF8(PyObject_Repr(co->co_freevars)));
             Py_FatalError("compiler_make_closure()");
         }
         ADDOP_I(c, LOAD_CLOSURE, arg);