[3.9] bpo-11105: Do not crash when compiling recursive ASTs (GH-20594) #26522
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When compiling an AST object with a direct / indirect reference
cycles, on the conversion phase because of exceeding amount of
calls, a segfault was raised. This patch adds recursion guards to
places for preventing user inputs to not to crash AST but instead
raise a RecursionError..
(cherry picked from commit f349124)
Co-authored-by: Batuhan Taskaya [email protected]
https://bugs.python.org/issue11105
Automerge-Triggered-By: GH:isidentical