File gh-78214-marshal_stabilize_FLAG_REF.patch of Package python310

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File gh-78214-marshal_stabilize_FLAG_REF.patch of Package python310 (Revision 85cefa69271567eb6dbf827a3cca50f9)

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From 6c8ea7c1dacd42f3ba00440231ec0e6b1a38300d Mon Sep 17 00:00:00 2001
From: Inada Naoki <songofacandy@gmail.com>
Date: Sat, 14 Jul 2018 00:46:11 +0900
Subject: [PATCH] Use FLAG_REF always for interned strings

---
 Python/marshal.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: Python-3.10.12/Python/marshal.c
===================================================================
--- Python-3.10.12.orig/Python/marshal.c
+++ Python-3.10.12/Python/marshal.c
@@ -298,9 +298,14 @@ w_ref(PyObject *v, char *flag, WFILE *p)
     if (p->version < 3 || p->hashtable == NULL)
         return 0; /* not writing object references */
 
-    /* if it has only one reference, it definitely isn't shared */
-    if (Py_REFCNT(v) == 1)
+    /* If it has only one reference, it definitely isn't shared.
+     * But we use TYPE_REF always for interned string, to PYC file stable
+     * as possible.
+     */
+    if (Py_REFCNT(v) == 1 &&
+            !(PyUnicode_CheckExact(v) && PyUnicode_CHECK_INTERNED(v))) {
         return 0;
+    }
 
     entry = _Py_hashtable_get_entry(p->hashtable, v);
     if (entry != NULL) {

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File gh-78214-marshal_stabilize_FLAG_REF.patch of Package python310 (Revision 85cefa69271567eb6dbf827a3cca50f9)

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