pub unsafe fn cstr_required(ptr: *const c_char, what: &str) -> Result<String>Expand description
Copy a UTF-8 C string, returning an error for null or invalid UTF-8.
ยงSafety
If non-null, ptr must point to a NUL-terminated string in a single
readable allocation of at most isize::MAX bytes, including the terminator.
The bytes must remain valid and unchanged for this call.