mirror of https://github.com/rust-lang/rust.git
Update FFI tutorial to reference `c_str::to_c_str`
The FFI tutorial still incorrectly stated that strings were terminated with \0 and suggested using `str::as_c_str`.
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@ -445,9 +445,8 @@ prefer using raw pointers (`*`) if that's needed because the compiler can't make
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about them.
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Vectors and strings share the same basic memory layout, and utilities are available in the `vec` and
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`str` modules for working with C APIs. Strings are terminated with `\0` for interoperability with C,
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but it should not be assumed because a slice will not always be nul-terminated. Instead, the
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`str::as_c_str` function should be used.
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`str` modules for working with C APIs. However, strings are not terminated with `\0`. If you need a
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NUL-terminated string for interoperability with C, you should use the `c_str::to_c_str` function.
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The standard library includes type aliases and function definitions for the C standard library in
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the `libc` module, and Rust links against `libc` and `libm` by default.
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