bpo-33509: Fix _warnings for module_globals=None (#6833)
Don't crash on warnings.warn_explicit() if module_globals is not a dict.
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 0568af4..29e475d 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -951,7 +951,14 @@
®istry, &module_globals, &sourceobj))
return NULL;
- if (module_globals) {
+ if (module_globals && module_globals != Py_None) {
+ if (!PyDict_Check(module_globals)) {
+ PyErr_Format(PyExc_TypeError,
+ "module_globals must be a dict, not '%.200s'",
+ Py_TYPE(module_globals)->tp_name);
+ return NULL;
+ }
+
source_line = get_source_line(module_globals, lineno);
if (source_line == NULL && PyErr_Occurred()) {
return NULL;