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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Inplace class definitions causes infinite looping","articleBody":"```py\nclass Foo:\n    def __init__(self: \"Foo\", bar: i32):\n        self.bar: i32 = bar\n\n    def __repr__(self: \"Foo\") -\u003e str:\n        return str(self.bar)\n\n\ndef main():\n    a: Foo = Foo(10)\n    print(a)\n\n\nmain()\n```\n\nWorks fine but if we make a Foo instance inplace in print\n\n```py\ndef main():\n    print(Foo(10))\n```\n\nthis causes an infinite loop.\n\nThis also happens in case of functions taking in a Foo param\n\n```py\ndef foobar(a: Foo):\n    print(a)\n```\n\nI imagine we need to add an error for as of now unsupported feature\n\nPS: I had encountered a similar problem in my [PR](https://github.com/lcompilers/lpython/pull/2822) I simply threw an error for that case\n\n","author":{"url":"https://github.com/swamishiju","@type":"Person","name":"swamishiju"},"datePublished":"2025-02-24T11:23:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/2826/lpython/issues/2826"}