Spurious "Use of moved value" on a u32

Environment

• Plugin 0.2.114.2151-193
• Rust 1.40.0
• CLion 2019.3
• Windows

Problem description

I have code that imports std::u32 to get at the u32::MAX const, but it seems to generate a spurious “use of moved value” when I use the same u32 twice in a function:

Steps to reproduce

In my code base, the word first on the line under “next: first,” is underlined and marked with error “use of moved value”. I assume the plugin sees that I used it on the line previous, thinking it was a move, but as it is a u32 so the compiler would done a copy not a move.

use std::u32;

#[derive(Debug, Clone)]
pub struct Handle {
    next: u32,
    first: u32,
}

impl Handle {
    /// Creates a new handle factory, that starts with the supplied number
    pub fn new(first: u32) -> Handle {
        Handle {
            next: first,
            first, // <-- ERROR HERE
        }
    }

    /// Returns the next handle to be issued, internally incrementing each time so the handle
    /// is always different until it wraps back to the start.
    pub fn next(&mut self) -> u32 {
        let next = self.next;
        // Increment next
        if self.next == u32::MAX {
            self.next = self.first;
        } else {
            self.next += 1;
        }
        next
    }

    pub fn set_next(&mut self, next: u32) {
        self.next = next;
    }

    /// Resets the handle to its initial state
    pub fn reset(&mut self) {
        self.set_next(self.first);
    }
}

[locka99]

No I don’t. It’s a stable rust set through “rustup default stable-gnu”. I’ll get back to you tonight because one machine can’t fetch from crates.io at the moment and I want to reproduce the behaviour from a machine that is building normally.

[locka99]

I’m going to close the issue because it works on the other computer. I think it is because the external crates could not be fetched there was nothing in External Libraries, even a reference to Rust’s own stdlib.