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gh-142029: Raise ModuleNotFoundError instead of crashing on nonexsistent module name given to create_builtin() (#142054)

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Co-authored-by: Brett Cannon <brett@python.org>
Co-authored-by: Victor Stinner <vstinner@python.org>
This commit is contained in:
dr-carlos 2025-12-15 22:50:19 +10:30 • committed by GitHub
parent 6658e2cb07
commit cd2ca74c53
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GPG key ID: B5690EEEBB952194
3 changed files with 34 additions and 12 deletions
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32
Python/import.c
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@ -2383,12 +2383,12 @@ is_builtin(PyObject *name)
return 0;
}
static PyModInitFunction
lookup_inittab_initfunc(const struct _Py_ext_module_loader_info* info)
static struct _inittab*
lookup_inittab_entry(const struct _Py_ext_module_loader_info* info)
{
for (struct _inittab *p = INITTAB; p->name != NULL; p++) {
if (_PyUnicode_EqualToASCIIString(info->name, p->name)) {
return (PyModInitFunction)p->initfunc;
return p;
}
}
// not found
@ -2430,16 +2430,28 @@ create_builtin(
_extensions_cache_delete(info.path, info.name);
}
PyModInitFunction p0 = initfunc;
if (p0 == NULL) {
p0 = lookup_inittab_initfunc(&info);
if (p0 == NULL) {
/* Cannot re-init internal module ("sys" or "builtins") */
assert(is_core_module(tstate->interp, info.name, info.path));
mod = import_add_module(tstate, info.name);
PyModInitFunction p0 = NULL;
if (initfunc == NULL) {
struct _inittab *entry = lookup_inittab_entry(&info);
if (entry == NULL) {
mod = NULL;
_PyErr_SetModuleNotFoundError(name);
goto finally;
}
p0 = (PyModInitFunction)entry->initfunc;
}
else {
p0 = initfunc;
}
if (p0 == NULL) {
/* Cannot re-init internal module ("sys" or "builtins") */
assert(is_core_module(tstate->interp, info.name, info.path));
mod = import_add_module(tstate, info.name);
goto finally;
}
#ifdef Py_GIL_DISABLED
// This call (and the corresponding call to _PyImport_CheckGILForModule())