Update Python 3 to 3.13.13

commit_hash:526db1f6570443324e2690db042314848cd47d2e

1 files changed, 35 insertions, 19 deletions

diff --git a/contrib/tools/python3/Modules/_struct.c b/contrib/tools/python3/Modules/_struct.c
index 016a1d3cf21..f5e1c62bb24 100644
--- a/contrib/tools/python3/Modules/_struct.c
+++ b/contrib/tools/python3/Modules/_struct.c
@@ -768,14 +768,13 @@ np_halffloat(_structmodulestate *state, char *p, PyObject *v, const formatdef *f
 static int
 np_float(_structmodulestate *state, char *p, PyObject *v, const formatdef *f)
 {
-    float x = (float)PyFloat_AsDouble(v);
+    double x = PyFloat_AsDouble(v);
     if (x == -1 && PyErr_Occurred()) {
         PyErr_SetString(state->StructError,
                         "required argument is not a float");
         return -1;
     }
-    memcpy(p, (char *)&x, sizeof x);
-    return 0;
+    return PyFloat_Pack4(x, p, PY_LITTLE_ENDIAN);
 }
 
 static int
@@ -1420,11 +1419,11 @@ align(Py_ssize_t size, char c, const formatdef *e)
 /* calculate the size of a format string */
 
 static int
-prepare_s(PyStructObject *self)
+prepare_s(PyStructObject *self, PyObject *format)
 {
     const formatdef *f;
     const formatdef *e;
-    formatcode *codes;
+    formatcode *codes, *codes0;
 
     const char *s;
     const char *fmt;
@@ -1434,8 +1433,8 @@ prepare_s(PyStructObject *self)
 
     _structmodulestate *state = get_struct_state_structinst(self);
 
-    fmt = PyBytes_AS_STRING(self->s_format);
-    if (strlen(fmt) != (size_t)PyBytes_GET_SIZE(self->s_format)) {
+    fmt = PyBytes_AS_STRING(format);
+    if (strlen(fmt) != (size_t)PyBytes_GET_SIZE(format)) {
         PyErr_SetString(state->StructError,
                         "embedded null character");
         return -1;
@@ -1476,9 +1475,23 @@ prepare_s(PyStructObject *self)
 
         switch (c) {
             case 's': /* fall through */
-            case 'p': len++; ncodes++; break;
+            case 'p':
+                if (len == PY_SSIZE_T_MAX) {
+                    goto overflow;
+                }
+                len++;
+                ncodes++;
+                break;
             case 'x': break;
-            default: len += num; if (num) ncodes++; break;
+            default:
+                if (num > PY_SSIZE_T_MAX - len) {
+                    goto overflow;
+                }
+                len += num;
+                if (num) {
+                    ncodes++;
+                }
+                break;
         }
 
         itemsize = e->size;
@@ -1503,13 +1516,7 @@ prepare_s(PyStructObject *self)
         PyErr_NoMemory();
         return -1;
     }
-    /* Free any s_codes value left over from a previous initialization. */
-    if (self->s_codes != NULL)
-        PyMem_Free(self->s_codes);
-    self->s_codes = codes;
-    self->s_size = size;
-    self->s_len = len;
-
+    codes0 = codes;
     s = fmt;
     size = 0;
     while ((c = *s++) != '\0') {
@@ -1549,6 +1556,14 @@ prepare_s(PyStructObject *self)
     codes->size = 0;
     codes->repeat = 0;
 
+    /* Free any s_codes value left over from a previous initialization. */
+    if (self->s_codes != NULL)
+        PyMem_Free(self->s_codes);
+    self->s_codes = codes0;
+    self->s_size = size;
+    self->s_len = len;
+    Py_XSETREF(self->s_format, Py_NewRef(format));
+
     return 0;
 
   overflow:
@@ -1614,9 +1629,8 @@ Struct___init___impl(PyStructObject *self, PyObject *format)
         return -1;
     }
 
-    Py_SETREF(self->s_format, format);
-
-    ret = prepare_s(self);
+    ret = prepare_s(self, format);
+    Py_DECREF(format);
     return ret;
 }
 
@@ -2188,6 +2202,7 @@ PyDoc_STRVAR(s_sizeof__doc__,
 static PyObject *
 s_sizeof(PyStructObject *self, void *unused)
 {
+    ENSURE_STRUCT_IS_READY(self);
     size_t size = _PyObject_SIZE(Py_TYPE(self)) + sizeof(formatcode);
     for (formatcode *code = self->s_codes; code->fmtdef != NULL; code++) {
         size += sizeof(formatcode);
@@ -2198,6 +2213,7 @@ s_sizeof(PyStructObject *self, void *unused)
 static PyObject *
 s_repr(PyStructObject *self)
 {
+    ENSURE_STRUCT_IS_READY(self);
     PyObject* fmt = PyUnicode_FromStringAndSize(
         PyBytes_AS_STRING(self->s_format), PyBytes_GET_SIZE(self->s_format));
     if (fmt == NULL) {