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Fixup style from extern fn panic commit #200

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Jan 15, 2018
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Fixup style from extern fn panic commit #200

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8 changes: 6 additions & 2 deletions src/items/functions.md
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Expand Up @@ -142,7 +142,7 @@ branch of the conditional.
## Extern functions

Extern functions are part of Rust's foreign function interface, providing the
opposite functionality to [external blocks](items/external-blocks.html). Whereas external
opposite functionality to [external blocks]. Whereas external
blocks allow Rust code to call foreign code, extern functions with bodies
defined in Rust code _can be called by foreign code_. They are defined in the
same way as any other Rust function, except that they have the `extern`
Expand All @@ -165,4 +165,8 @@ same type as the functions declared in an extern block.
let fptr: extern "C" fn() -> i32 = new_i32;
```

As non-Rust calling conventions do not support unwinding, unwinding past the end of an extern function will cause the process to abort (in LLVM, this is implemented by executing an illegal instruction).
As non-Rust calling conventions do not support unwinding, unwinding past the end
of an extern function will cause the process to abort. In LLVM, this is
implemented by executing an illegal instruction.

[external blocks]: items/external-blocks.html