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-rw-r--r--Objects/stringobject.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index c87b688009..b8e5f41342 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -3530,6 +3530,7 @@ _PyString_Resize(PyObject **pv, int newsize)
sv = (PyStringObject *) *pv;
sv->ob_size = newsize;
sv->ob_sval[newsize] = '\0';
+ sv->ob_shash = -1; /* invalidate cached hash value */
return 0;
}