# Is this a bug? Nested Functions and NLsolve

**URL:** https://discourse.julialang.org/t/is-this-a-bug-nested-functions-and-nlsolve/86085
**Category:** General Usage
**Tags:** bug, optimization, functions
**Created:** [August 21, 2022, 12:15pm UTC](https://discourse.julialang.org/t/is-this-a-bug-nested-functions-and-nlsolve/86085 "2022-08-21T12:15:41Z")
**Posts on this page:** 1
**Showing post:** 9

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### Author: ![alfaromartino](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/alfaromartino/32/52986_2.png) [@alfaromartino](https://discourse.julialang.org/u/alfaromartino)
#### Post date: [August 21, 2022, 10:01pm UTC](https://discourse.julialang.org/t/is-this-a-bug-nested-functions-and-nlsolve/86085/9 "2022-08-21T22:01:30Z")

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Where exactly is this documented? You even said in the post you deleted that this is a known bug

> [@Ominous type instability](https://discourse.julialang.org/t/ominous-type-instability/85169/11):
>
> This seems to be a known issue:

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