8000 bpo-1635741: Enable unicode_release_interned() without insure or valgrind. by shihai1991 · Pull Request #21087 · python/cpython · GitHub
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bpo-1635741: Enable unicode_release_interned() without insure or valgrind. #21087

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bpo-1635741: Enable unicode_release_interned() without insure or valgrind. #21087

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ed3cd98
Enable unicode_release_interned() without insure or valgrind.
shihai1991 Jun 23, 2020
3c8db50
resolve use after free
shihai1991 Jun 23, 2020
03f650d
Merge branch 'master' into bpo_1635741_interned_unicode
shihai1991 Jun 23, 2020
b2e578d
resolve confilicts
shihai1991 Jun 24, 2020
4618783
Use PyDict_Next() in unicode_release_interned()
shihai1991 Jun 25, 2020
8b47de1
resolve conflicts
shihai1991 Jun 25, 2020
33272ac
Merge remote-tracking branch 'origin/master' into bpo_1635741_interne…
shihai1991 Jun 25, 2020
ec1671b
update vars' name
shihai1991 Jun 25, 2020
b0da3bd
_PyUnicode_Fini() before _PyDict_Fini()
shihai1991 Jul 1, 2020
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update vars' name
  • Loading branch information
@shihai1991
shihai1991 committed Jun 25, 2020
commit ec1671b8c7f07e9a30d9884e5e66803e4bf8d42d
18 changes: 9 additions & 9 deletions Objects/unicodeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15661,7 +15661,7 @@ static void
unicode_release_interned(void)
{
Py_ssize_t pos = 0;
PyObject *key, *value;
PyObject *s, *ignored_value;

if (interned == NULL || !PyDict_Check(interned)) {
return;
Expand All @@ -15676,29 +15676,29 @@ unicode_release_interned(void)

Py_ssize_t immortal_size = 0, mortal_size = 0;
#endif
while (PyDict_Next(interned, &pos, &key, &value FA9A )) {
if (PyUnicode_READY(key) == -1) {
while (PyDict_Next(interned, &pos, &s, &ignored_value)) {
if (PyUnicode_READY(s) == -1) {
Py_UNREACHABLE();
}
switch (PyUnicode_CHECK_INTERNED(key)) {
switch (PyUnicode_CHECK_INTERNED(s)) {
case SSTATE_INTERNED_IMMORTAL:
Py_SET_REFCNT(key, Py_REFCNT(key) + 1);
Py_SET_REFCNT(s, Py_REFCNT(s) + 1);
#ifdef INTERNED_STATS
immortal_size += PyUnicode_GET_LENGTH(key);
immortal_size += PyUnicode_GET_LENGTH(s);
#endif
break;
case SSTATE_INTERNED_MORTAL:
Py_SET_REFCNT(key, Py_REFCNT(key) + 2);
Py_SET_REFCNT(s, Py_REFCNT(s) + 2);
#ifdef INTERNED_STATS
mortal_size += PyUnicode_GET_LENGTH(key);
mortal_size += PyUnicode_GET_LENGTH(s);
#endif
break;
case SSTATE_NOT_INTERNED:
/* fall through */
default:
Py_UNREACHABLE();
}
_PyUnicode_STATE(key).interned = SSTATE_NOT_INTERNED;
_PyUnicode_STATE(s).interned = SSTATE_NOT_INTERNED;
}
#ifdef INTERNED_STATS
fprintf(stderr,
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2 changes: 1 addition & 1 deletion Python/pylifecycle.c
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Expand Up @@ -1260,13 +1260,13 @@ finalize_interp_types(PyThreadState *tstate, int is_main_interp)
_PyContext_Fini(tstate);

_PyDict_Fini(tstate);
_PyList_Fini(tstate);
_PyTuple_Fini(tstate);

_PySlice_Fini(tstate);

_PyBytes_Fini(tstate);
_PyUnicode_Fini(tstate);
_PyList_Fini(tstate);
_PyFloat_Fini(tstate);
_PyLong_Fini(tstate);
}
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