Fail closed on class alias mutations
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@@ -414,6 +414,7 @@ def _class_attr(cls, name, env):
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aliases.add(stmt.targets[0].id)
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continue
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if aliases.intersection(target_names):
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value = _INVALID
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aliases.difference_update(target_names)
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if name not in target_names:
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continue
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@@ -436,6 +437,7 @@ def _class_attr(cls, name, env):
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aliases.add(stmt.target.id)
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continue
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if aliases.intersection(target_names):
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value = _INVALID
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aliases.difference_update(target_names)
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if name not in target_names:
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continue
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@@ -452,6 +454,7 @@ def _class_attr(cls, name, env):
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if isinstance(stmt, ast.AugAssign):
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target_names = _assignment_target_names(stmt)
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if aliases.intersection(target_names):
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value = _INVALID
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aliases.difference_update(target_names)
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if name in target_names:
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value = _INVALID
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@@ -459,6 +462,7 @@ def _class_attr(cls, name, env):
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if isinstance(stmt, ast.Delete):
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target_names = _delete_target_names(stmt)
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if aliases.intersection(target_names):
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value = _INVALID
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aliases.difference_update(target_names)
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if name in target_names:
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value = _INVALID
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