no_redundant_jumps: Assertion `0' failed · Issue #120367 · python/cpython (original) (raw)

Bug report

Bug description:

The following code causes a crash on cpython 3.13 branch (f5289c4) and the current main.

import ast

code=""" try: if name_4: pass else: pass except* name_0: pass else: name_4 """

tree = ast.parse(code) for node in ast.walk(tree): if hasattr(node,"lineno"): del node.lineno del node.end_lineno del node.col_offset del node.end_col_offset

compile(ast.fix_missing_locations(tree), "", "exec")

output (Python 3.13.0a3+):

python: Python/flowgraph.c:511: no_redundant_jumps: Assertion `0' failed.

I bisected the problem down to 2091fb2.
@iritkatriel can you take a look at it?

CPython versions tested on:

3.13, CPython main branch

Operating systems tested on:

No response

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