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-rw-r--r--Python/_warnings.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Python/_warnings.c b/Python/_warnings.c
index a797887..07fd683 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -496,7 +496,7 @@ setup_context(Py_ssize_t stack_level, PyObject **filename, int *lineno,
/* Setup filename. */
*filename = PyDict_GetItemString(globals, "__file__");
- if (*filename != NULL) {
+ if (*filename != NULL && PyUnicode_Check(*filename)) {
Py_ssize_t len = PyUnicode_GetSize(*filename);
Py_UNICODE *unicode = PyUnicode_AS_UNICODE(*filename);