Hi, I'm exposing a Rust crate to C and I'm trying to figure out how to copy a Vec<u8> into a *mut u8 given by the C world as a parameter like this: pub extern "C" fn c_create_data(data: *mut u8) -> c_int { let v: Vec<u8> = some_data_gen_fn(); // how to put the content of the Vec so it's avail…

Here's some thing that uses ptr::copy instead which I think should handle an uninitialized buffer: std::ptr::copy(v.as_ptr(), data, v.len()); Rust Playground A browser interface to the Rust compiler to experiment with the language

[FFI] How to copy a Vec<u8> into a *mut u8?

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[FFI] How to copy a Vec<u8> into a *mut u8?

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