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Fix example in FFI section Calling Rust from C #193

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Feb 1, 2020
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Fix example in FFI section Calling Rust from C #193

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4 changes: 2 additions & 2 deletions src/ffi.md
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Original file line number Diff line number Diff line change
Expand Up @@ -662,13 +662,13 @@ fairly easy, but requires a few things:

```rust
#[no_mangle]
pub extern fn hello_rust() -> *const u8 {
pub extern "C" fn hello_rust() -> *const u8 {
"Hello, world!\0".as_ptr()
}
# fn main() {}
```

The `extern` makes this function adhere to the C calling convention, as
The `extern "C"` makes this function adhere to the C calling convention, as
discussed above in "[Foreign Calling
Conventions](ffi.html#foreign-calling-conventions)". The `no_mangle`
attribute turns off Rust's name mangling, so that it is easier to link to.
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