pythongh-133581: Fix refleak in t-string AST unparsing (python#133724)

JelleZijlstra · web-flow · commit 308ceffc6869 · 2025-05-09T09:10:52.000+02:00
diff --git a/Python/ast_unparse.c b/Python/ast_unparse.c
@@ -749,6 +749,7 @@ append_templatestr(PyUnicodeWriter *writer, expr_ty e)
             goto error;
         }
     }
+    _PyArena_Free(arena);
 
     return 0;
 

Original file line number	Diff line number	Diff line change
`@@ -749,6 +749,7 @@ append_templatestr(PyUnicodeWriter *writer, expr_ty e)`
`749`	`749`	`goto error;`
`750`	`750`	`}`
`751`	`751`	`}`
	`752`	`+ _PyArena_Free(arena);`
`752`	`753`
`753`	`754`	`return 0;`
`754`	`755`