[Python-checkins] gh-133581: Fix refleak in t-string AST unparsing (#133724)

[lysnikolaou]

https://github.com/python/cpython/commit/308ceffc6869e3c12665f1ffa68db09a70fb9b58
commit: 308ceffc6869e3c12665f1ffa68db09a70fb9b58
branch: main
author: Jelle Zijlstra <jelle.zijls...@gmail.com>
committer: lysnikolaou <lisandros...@gmail.com>
date: 2025-05-09T09:10:52+02:00
summary:

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

files:
M Python/ast_unparse.c

diff --git a/Python/ast_unparse.c b/Python/ast_unparse.c
index ae623e0b4171f8..557c12cfda61ff 100644
--- 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;
 

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