bpo-40077: Fix potential refleaks of _json: traverse memo (pythonGH-19344)

shihai1991 · web-flow · commit b709302f3125 · 2020-04-04T21:24:16.000+02:00
Fix possible refleaks in _json module, memo of PyScannerObject
should be traversed.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-04-04-12-43-19.bpo-40077.m15TTX.rst b/Misc/NEWS.d/next/Core and Builtins/2020-04-04-12-43-19.bpo-40077.m15TTX.rst
@@ -0,0 +1 @@
+Fix possible refleaks in :mod:`_json`, memo of PyScannerObject should be traversed.
diff --git a/Modules/_json.c b/Modules/_json.c
@@ -652,6 +652,7 @@ scanner_traverse(PyScannerObject *self, visitproc visit, void *arg)
     Py_VISIT(self->parse_float);
     Py_VISIT(self->parse_int);
     Py_VISIT(self->parse_constant);
+    Py_VISIT(self->memo);
     return 0;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix possible refleaks in :mod:`_json`, memo of PyScannerObject should be traversed.
Original file line number	Diff line number	Diff line change
`@@ -652,6 +652,7 @@ scanner_traverse(PyScannerObject self, visitproc visit, void arg)`
`652`	`652`	`Py_VISIT(self->parse_float);`
`653`	`653`	`Py_VISIT(self->parse_int);`
`654`	`654`	`Py_VISIT(self->parse_constant);`
	`655`	`+ Py_VISIT(self->memo);`
`655`	`656`	`return 0;`
`656`	`657`	`}`
`657`	`658`