Thanks to visit codestin.com
Credit goes to github.com

Skip to content

gh-105699: Fix an Interned Strings Crasher #106930

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ericsnowcurrently merged 2 commits into from
Jul 21, 2023
Merged

gh-105699: Fix an Interned Strings Crasher #106930

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
261fa29
Don't always clear the interned state for a string.
ericsnowcurrently Jul 19, 2023
eeb53e7
Add a NEWS entry.
ericsnowcurrently Jul 20, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Next Next commit
Don't always clear the interned state for a string.
  • Loading branch information
@ericsnowcurrently
ericsnowcurrently committed Jul 20, 2023
commit 261fa2901e6c90a43596ac9107d66d0e3e8f7036
13 changes: 12 additions & 1 deletion Objects/unicodeobject.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14818,6 +14818,7 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
PyObject *s, *ignored_value;
while (PyDict_Next(interned, &pos, &s, &ignored_value)) {
assert(PyUnicode_IS_READY(s));
int shared = 0;
switch (PyUnicode_CHECK_INTERNED(s)) {
case SSTATE_INTERNED_IMMORTAL:
// Skip the Immortal Instance check and restore
Expand All @@ -14829,6 +14830,14 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
#endif
break;
case SSTATE_INTERNED_IMMORTAL_STATIC:
/* It is shared between interpreters, so we should unmark it
only when this is the last interpreter in which it's
interned. We immortalize all the statically initialized
strings during startup, so we can rely on the
main interpreter to be the last one. */
if (!_Py_IsMainInterpreter(interp)) {
shared = 1;
}
break;
case SSTATE_INTERNED_MORTAL:
/* fall through */
Expand All @@ -14837,7 +14846,9 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
default:
Py_UNREACHABLE();
}
_PyUnicode_STATE(s).interned = SSTATE_NOT_INTERNED;
if (!shared) {
_PyUnicode_STATE(s).interned = SSTATE_NOT_INTERNED;
}
}
#ifdef INTERNED_STATS
fprintf(stderr,
Expand Down