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gh-159739: Release resources on interpreter startup error paths #159752

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Merged
gpshead merged 1 commit into from
Oct 19, 2026
Merged

gh-159739: Release resources on interpreter startup error paths #159752

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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2026-10-19-19-33-35.gh-issue-159739.c25c27.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix memory leaks during interpreter startup when a path configuration file is
empty or too large, or when an audit hook rejects a command.
2 changes: 2 additions & 0 deletions Modules/getpath.c
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Expand Up @@ -409,9 +409,11 @@ getpath_readlines_impl(PyObject *module, PyObject *pathobj)
size_t cb = fread(buffer, 1, MAX_FILE, fp);
fclose(fp);
if (!cb) {
PyMem_Free(buffer);
return r;
}
if (cb >= MAX_FILE) {
PyMem_Free(buffer);
Py_DECREF(r);
PyErr_SetString(PyExc_MemoryError,
"cannot read file larger than 32KB during initialization");
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1 change: 1 addition & 0 deletions Modules/main.c
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Expand Up @@ -286,6 +286,7 @@ pymain_run_command(wchar_t *command)
}

if (PySys_Audit("cpython.run_command", "O", unicode) < 0) {
Py_DECREF(unicode);
return pymain_exit_err_print();
}

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