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Bug: dl-walk would infinite-loop on a circular substitution (e.g. A→B and B→A simultaneously). The walk endlessly chased the cycle. This couldn't be produced through dl-unify (which has cycle-safe behavior via existing bindings), but raw dl-bind calls or external manipulation of the subst dict could create it. Fix: dl-walk now threads a visited-names list through the recursion. If a variable name is already in the list, the walk stops and returns the current term unchanged. Normal chained walks are unaffected (A→B→C→42 still resolves to 42). 1 new unify test verifies circular substitutions don't hang.
21 lines
775 B
JSON
21 lines
775 B
JSON
{
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"lang": "datalog",
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"total_passed": 257,
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"total_failed": 0,
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"total": 257,
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"suites": [
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{"name":"tokenize","passed":30,"failed":0,"total":30},
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{"name":"parse","passed":22,"failed":0,"total":22},
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{"name":"unify","passed":29,"failed":0,"total":29},
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{"name":"eval","passed":38,"failed":0,"total":38},
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{"name":"builtins","passed":23,"failed":0,"total":23},
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{"name":"semi_naive","passed":8,"failed":0,"total":8},
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{"name":"negation","passed":10,"failed":0,"total":10},
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{"name":"aggregates","passed":20,"failed":0,"total":20},
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{"name":"api","passed":20,"failed":0,"total":20},
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{"name":"magic","passed":36,"failed":0,"total":36},
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{"name":"demo","passed":21,"failed":0,"total":21}
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],
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"generated": "2026-05-11T07:20:07+00:00"
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}
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