From: Erlend Egeberg Aasland <erlend.aasland@innova.no>
Date: Thu, 8 Apr 2021 23:05:44 +0000 (+0200)
Subject: Fix possible refleak involving _PyArena_AddPyObject (GH-25289)
X-Git-Tag: v3.10.0b1~359
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c0e11a3ceb9427e09db4224f394c7789bf6deec5;p=thirdparty%2FPython%2Fcpython.git

Fix possible refleak involving _PyArena_AddPyObject (GH-25289)
---

diff --git a/Parser/pegen.c b/Parser/pegen.c
index 82dcd3bb5a85..7b5a5e914685 100644
--- a/Parser/pegen.c
+++ b/Parser/pegen.c
@@ -690,7 +690,10 @@ _PyPegen_fill_token(Parser *p)
     if (t->bytes == NULL) {
         return -1;
     }
-    _PyArena_AddPyObject(p->arena, t->bytes);
+    if (_PyArena_AddPyObject(p->arena, t->bytes) < 0) {
+        Py_DECREF(t->bytes);
+        return -1;
+    }
 
     int lineno = type == STRING ? p->tok->first_lineno : p->tok->lineno;
     const char *line_start = type == STRING ? p->tok->multi_line_start : p->tok->line_start;