Unsound usages of unsafe implementation from u8 to str

[llooFlashooll]

Hi, I am scanning the anyhow in latest version with my own static analyzer tool.

Unsafe conversion found at: src/ensure.rs:50:38: 53:14.

fn as_str(&self) -> &str {
    unsafe {
        str::from_utf8_unchecked(slice::from_raw_parts(
            self.bytes.as_ptr().cast::<u8>(),
            self.written,
        ))
    }
}

This unsound implementation would create a misalignment issues.

This would potentially cause undefined behaviors in Rust. I am reporting this issue for your attention.

[dtolnay]

I believe this code is correct. Str's alignment is 1 so I don't see how there would be the misalignment issue you say.

[llooFlashooll]

Ok, thanks! Since I think Rust it's a strongly-typed language, I think direct different type conversion, originally it should be an issue.
I am just reporting for discuss.