Fix out of range bug (#538)

methane · web-flow · commit c1c812a1dfeb · 2022-04-17T10:21:21.000+09:00
diff --git a/MySQLdb/_mysql.c b/MySQLdb/_mysql.c
@@ -1442,7 +1442,7 @@ _mysql_ResultObject_fetch_row(
                      &maxrows, &how))
         return NULL;
     check_result_connection(self);
-    if (how >= (int)sizeof(row_converters)) {
+    if (how >= (int)(sizeof(row_converters) / sizeof(row_converters[0]))) {
         PyErr_SetString(PyExc_ValueError, "how out of range");
         return NULL;
     }

Original file line number	Diff line number	Diff line change
`@@ -1442,7 +1442,7 @@ _mysql_ResultObject_fetch_row(`
`1442`	`1442`	`&maxrows, &how))`
`1443`	`1443`	`return NULL;`
`1444`	`1444`	`check_result_connection(self);`
`1445`		`- if (how >= (int)sizeof(row_converters)) {`
	`1445`	`+ if (how >= (int)(sizeof(row_converters) / sizeof(row_converters[0]))) {`
`1446`	`1446`	`PyErr_SetString(PyExc_ValueError, "how out of range");`
`1447`	`1447`	`return NULL;`
`1448`	`1448`	`}`