bpo-36817: Do not decrement reference for expr_text on fstring = parsing failure (GH-13256)
diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py
index a0fae50..3484fce 100644
--- a/Lib/test/test_fstring.py
+++ b/Lib/test/test_fstring.py
@@ -1148,6 +1148,8 @@
self.assertEqual(f'{C()=:x}', 'C()=FORMAT-x')
self.assertEqual(f'{C()=!r:*^20}', 'C()=********REPR********')
+ self.assertRaises(SyntaxError, eval, "f'{C=]'")
+
def test_walrus(self):
x = 20
# This isn't an assignment expression, it's 'x', with a format
diff --git a/Python/ast.c b/Python/ast.c
index 585f8b3..03da4e7 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -5283,7 +5283,6 @@
/* Falls through to error. */
error:
- Py_XDECREF(expr_text);
return -1;
}