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Improve some heading levels
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@@ -141,7 +141,7 @@ But how do we deallocate memory in our bump allocator? Well, we don't ;). We jus
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(Don't worry, we will introduce a better allocator later in this post.)
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### Custom Allocators in Rust
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## Custom Allocators in Rust
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In order to use our crate as system allocator, we add some attributes at the beginning of the file:
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``` rust
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@@ -320,7 +320,7 @@ The `collections` crate provides the [format!] and [vec!] macros, so we use `#[m
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[format!]: //doc.rust-lang.org/nightly/collections/macro.format!.html
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[vec!]: https://doc.rust-lang.org/nightly/collections/macro.vec!.html
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## Testing
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### Testing
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Now we should be able to allocate memory on the heap. Let's try it in our `rust_main`:
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