1 files changed, 6 insertions, 2 deletions
diff --git a/Modules/_csv.c b/Modules/_csv.c
index ea3add2dbc..ab2a5ed8d2 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -208,8 +208,12 @@ _set_bool(const char *name, int *target, PyObject *src, int dflt)
 {
     if (src == NULL)
         *target = dflt;
-    else
-        *target = PyObject_IsTrue(src);
+    else {
+        int b = PyObject_IsTrue(src);
+        if (b < 0)
+            return -1;
+        *target = b;
+    }
     return 0;
 }