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rollup merge of #18347 : cakebaker/ffi

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Alex Crichton 2014-10-27 09:08:09 -07:00
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src/doc/guide.md
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@ -5339,9 +5339,9 @@ There are two circumstances where Rust's safety provisions don't work well.
The first is when interfacing with C code, and the second is when building
certain kinds of abstractions.
Rust has support for FFI (which you can read about in the [FFI
Guide](guide-ffi.html)), but can't guarantee that the C code will be safe.
Therefore, Rust marks such functions with the `unsafe`
Rust has support for [FFI](http://en.wikipedia.org/wiki/Foreign_function_interface)
(which you can read about in the [FFI Guide](guide-ffi.html)), but can't guarantee
that the C code will be safe. Therefore, Rust marks such functions with the `unsafe`
keyword, which indicates that the function may not behave properly.
Second, if you'd like to create some sort of shared-memory data structure, Rust