Using the run button on Rust code that binds or opens a UDP socket immediately panics

[recatek]

Well, here's a strange one:

/test/Cargo.toml

[package]
name = "test"
version = "0.0.0"
edition = "2021"

/test/src/main.rs

use std::net::{SocketAddr, UdpSocket};

fn main() {
    let bind_addr = SocketAddr::from(([127, 0, 0, 1], 54321));
    let x = UdpSocket::bind(bind_addr).unwrap();
    eprintln!("{:?}", x);
}

Running this code gives me

Exception thrown at 0x00007FFB7B34CD29 in server.exe: Microsoft C++ exception:  ?? ::st_panic at memory location 0x000000A01290EF20.

on startup. Commenting out the bind call prevents the panic. Wonder if it's something with the debugger hooking in?

Visual Studio Community 2022 (64-bit) Version 17.5.1 rustc 1.67.1 (d5a82bbd2 2023-02-07) cargo 1.67.1 (8ecd4f20a 2023-01-10) Building on stable-x86_64-pc-windows-msvc

[parthopdas]

this is very strange

1. cargo build --profile dev, run exe gives UdpSocket { addr: 127.0.0.1:54321, socket: 236 }
2. cargo build --profile dev, open exe in vs and run under debugger gives the same as above
3. Open folder (i.e. using this extension) F5 however panics.

[recatek]

I'm wondering if it's something about the MSVC execution environment that doesn't support sockets in Rust? I've been looking for reports of similar issues but haven't found anything.

[parthopdas]

thanks for reporting this.

should be available in today's release v2.0.x