Skip to content

gh-102660: Fix is_core_module() #103257

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
merged 1 commit into from
Apr 4, 2023
Merged

gh-102660: Fix is_core_module() #103257

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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
14 changes: 13 additions & 1 deletion Python/import.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1110,7 +1110,17 @@ get_core_module_dict(PyInterpreterState *interp,
static inline int
is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *filename)
{
return get_core_module_dict(interp, name, filename) != NULL;
/* This might be called before the core dict copies are in place,
so we can't rely on get_core_module_dict() here. */
if (filename == name) {
if (PyUnicode_CompareWithASCIIString(name, "sys") == 0) {
return 1;
}
if (PyUnicode_CompareWithASCIIString(name, "builtins") == 0) {
return 1;
}
}
return 0;
}

static int
Expand All @@ -1136,6 +1146,8 @@ fix_up_extension(PyObject *mod, PyObject *name, PyObject *filename)
// when the extension module doesn't support sub-interpreters.
if (def->m_size == -1) {
if (!is_core_module(tstate->interp, name, filename)) {
assert(PyUnicode_CompareWithASCIIString(name, "sys") != 0);
assert(PyUnicode_CompareWithASCIIString(name, "builtins") != 0);
if (def->m_base.m_copy) {
/* Somebody already imported the module,
likely under a different name.
Expand Down