no_redundant_jumps: Assertion `0' failed · Issue #120367 · python/cpython · GitHub
Skip to content

no_redundant_jumps: Assertion `0' failed #120367

Description

@15r10nk

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), "<file>", "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

Linked PRs

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Labels

3.13bugs and security fixes3.14bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)type-crashA hard crash of the interpreter, possibly with a core dump

Projects

No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions