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Setup Rust: fix typo in attribute name

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Jacob Krall
2015-10-30 22:08:20 -04:00
committed by Philipp Oppermann
parent 3453fbfa2f
commit 8c45ffff6a
1 changed files with 1 additions and 1 deletions
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_posts/2015-09-02-setup-rust.md
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@@ -52,7 +52,7 @@ pub extern fn rust_main() {}
Let's break it down:
- `#!` defines an [attribute] of the current module. Since we are at the root module, they apply to the crate itself.
- The `features` attribute is used to allow the specified _feature-gated_ attributes in this crate. You can't do that in a stable/beta compiler, so this is one reason we need a Rust nighly.
- The `feature` attribute is used to allow the specified _feature-gated_ attributes in this crate. You can't do that in a stable/beta compiler, so this is one reason we need a Rust nighly.
- The `no_std` attribute prevents the automatic linking of the standard library. We can't use `std` because it relies on operating system features like files, system calls, and various device drivers. Remember that currently the only “feature” of our OS is printing `OKAY` :).
- A `#` without a `!` afterwards defines an attribute for the _following_ item (a function in our case).
- The `no_mangle` attribute disables the automatic [name mangling] that Rust uses to get unique function names. We want to do a `call rust_main` from our assembly code, so this function name must stay as it is.