mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-01 07:33:08 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

bpo-43693: Un-revert commit f3fa63e. (#26609)

Browse source 
This was reverted in GH-26596 (commit 6d518bb) due to some bad memory accesses.

* Add the MAKE_CELL opcode. (gh-26396)

The memory accesses have been fixed.

https://bugs.python.org/issue43693
This commit is contained in:
Eric Snow 2021-06-08 16:01:34 -06:00 • committed by GitHub
parent ab36b9f834
commit 3e1c7167d8
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
16 changed files with 4470 additions and 4234 deletions
Download patch file Download diff file Expand all files Collapse all files

13
Objects/typeobject.c
View file

@ -11,6 +11,8 @@
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_unionobject.h" // _Py_Union(), _Py_union_type_or
#include "frameobject.h"
#include "pycore_frame.h" // _PyFrame_OpAlreadyRan
#include "opcode.h" // MAKE_CELL
#include "structmember.h" // PyMemberDef
#include <ctype.h>
@ -8877,14 +8879,17 @@ super_init_without_args(PyFrameObject *f, PyCodeObject *co,
}
PyObject *obj = f->f_localsptr[0];
Py_ssize_t i;
int i;
if (obj == NULL && co->co_cell2arg) {
/* The first argument might be a cell. */
for (i = 0; i < co->co_ncellvars; i++) {
if (co->co_cell2arg[i] == 0) {
PyObject *cell = f->f_localsptr[co->co_nlocals + i];
assert(PyCell_Check(cell));
obj = PyCell_GET(cell);
int celloffset = co->co_nlocals + i;
PyObject *cell = f->f_localsptr[celloffset];
if (PyCell_Check(cell) &&
_PyFrame_OpAlreadyRan(f, MAKE_CELL, celloffset)) {
obj = PyCell_GET(cell);
}
break;
}
}