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bpo-38140: Make dict and weakref offsets opaque for C heap types (#16076)
* Make dict and weakref offsets opaque for C heap types * Add news
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079931d122
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8 changed files with 188 additions and 8 deletions
9
Python/Python-ast.c
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9
Python/Python-ast.c
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@ -4,6 +4,7 @@
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#include "Python.h"
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#include "Python-ast.h"
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#include "structmember.h"
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typedef struct {
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int initialized;
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@ -1216,6 +1217,11 @@ ast_type_reduce(PyObject *self, PyObject *unused)
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return Py_BuildValue("O()", Py_TYPE(self));
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}
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static PyMemberDef ast_type_members[] = {
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{"__dictoffset__", T_PYSSIZET, offsetof(AST_object, dict), READONLY},
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{NULL} /* Sentinel */
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};
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static PyMethodDef ast_type_methods[] = {
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{"__reduce__", ast_type_reduce, METH_NOARGS, NULL},
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{NULL}
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@ -1232,6 +1238,7 @@ static PyType_Slot AST_type_slots[] = {
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{Py_tp_setattro, PyObject_GenericSetAttr},
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{Py_tp_traverse, ast_traverse},
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{Py_tp_clear, ast_clear},
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{Py_tp_members, ast_type_members},
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{Py_tp_methods, ast_type_methods},
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{Py_tp_getset, ast_type_getsets},
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{Py_tp_init, ast_type_init},
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@ -1421,8 +1428,6 @@ static int init_types(void)
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if (init_identifiers() < 0) return 0;
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state->AST_type = PyType_FromSpec(&AST_type_spec);
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if (!state->AST_type) return 0;
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((PyTypeObject*)state->AST_type)->tp_dictoffset = offsetof(AST_object,
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dict);
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if (add_ast_fields() < 0) return 0;
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state->mod_type = make_type("mod", state->AST_type, NULL, 0);
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if (!state->mod_type) return 0;
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