diff --git a/mypy/dmypy_server.py b/mypy/dmypy_server.py index 52db838d038e..157850b39ee9 100644 --- a/mypy/dmypy_server.py +++ b/mypy/dmypy_server.py @@ -557,6 +557,10 @@ def fine_grained_increment_follow_imports(self, sources: List[BuildSource]) -> L if module[0] not in graph: continue sources2 = self.direct_imports(module, graph) + # Filter anything already seen before. This prevents + # infinite looping if there are any self edges. (Self + # edges are maybe a bug, but...) + sources2 = [source for source in sources2 if source.module not in seen] changed, new_files = self.find_reachable_changed_modules( sources2, graph, seen, changed_paths )
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