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Diffstat (limited to 'doc/tutorial-ffi.md')
| -rw-r--r-- | doc/tutorial-ffi.md | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/doc/tutorial-ffi.md b/doc/tutorial-ffi.md index 46d37a559bb..38aea02f040 100644 --- a/doc/tutorial-ffi.md +++ b/doc/tutorial-ffi.md @@ -415,21 +415,18 @@ fn main() { Most foreign code exposes a C ABI, and Rust uses the platform's C calling convention by default when calling foreign functions. Some foreign functions, most notably the Windows API, use other calling -conventions. Rust provides the `abi` attribute as a way to hint to the compiler which calling -convention to use: +conventions. Rust provides a way to tell the compiler which convention to use: ~~~~ #[cfg(target_os = "win32")] -#[abi = "stdcall"] #[link_name = "kernel32"] -extern { +extern "stdcall" { fn SetEnvironmentVariableA(n: *u8, v: *u8) -> int; } ~~~~ -The `abi` attribute applies to a foreign module (it cannot be applied to a single function within a -module), and must be either `"cdecl"` or `"stdcall"`. The compiler may eventually support other -calling conventions. +This applies to the entire `extern` block, and must be either `"cdecl"` or +`"stdcall"`. The compiler may eventually support other calling conventions. # Interoperability with foreign code |