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-rw-r--r--Objects/unicodeobject.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index c0511ddc..ab77b03 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -8089,6 +8089,10 @@ PyUnicode_FindChar(PyObject *str, Py_UCS4 ch,
int kind;
if (PyUnicode_READY(str) == -1)
return -2;
+ if (start < 0 || end < 0) {
+ PyErr_SetString(PyExc_IndexError, "string index out of range");
+ return -2;
+ }
if (end > PyUnicode_GET_LENGTH(str))
end = PyUnicode_GET_LENGTH(str);
kind = PyUnicode_KIND(str);