Issue #18408: Fix ast_for_atom(), PyErr_Fetch(&type, &value, &tback) can set value to NULL

vstinner · vstinner · commit 0fae8f9083c9 · 2013-07-17T21:51:42.000+02:00
diff --git a/Python/ast.c b/Python/ast.c
@@ -1845,7 +1845,7 @@ ast_for_atom(struct compiling *c, const node *n)
                 }
                 ast_error(c, n, buf);
                 Py_DECREF(type);
-                Py_DECREF(value);
+                Py_XDECREF(value);
                 Py_XDECREF(tback);
             }
             return NULL;

Original file line number	Diff line number	Diff line change
`@@ -1845,7 +1845,7 @@ ast_for_atom(struct compiling c, const node n)`
`1845`	`1845`	`}`
`1846`	`1846`	`ast_error(c, n, buf);`
`1847`	`1847`	`Py_DECREF(type);`
`1848`		`- Py_DECREF(value);`
	`1848`	`+ Py_XDECREF(value);`
`1849`	`1849`	`Py_XDECREF(tback);`
`1850`	`1850`	`}`
`1851`	`1851`	`return NULL;`