STATUS_ACCESS_VIOLATION in unstable thread_local feature on windows-gnu

[uselessgoddess]

I tried this code:

#![feature(thread_local)]

use std::cell::RefCell;
use std::mem::MaybeUninit;

#[thread_local]
static PLACE: RefCell<usize> = RefCell::new(0);

fn touch(x: usize) {
    *PLACE.borrow_mut() = x;
}

pub fn main() {
    touch(12);
}

But it breaks down inside RefCell:
error: process didn't exit successfully: 'target\debug\sandbox.exe' (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)

Debugger comes to here:

rustc 1.65.0-nightly (878aef79d 2022-08-20)
binary: rustc
commit-hash: 878aef79dcdf59d19bb8482202dc55e58ceb62ff
commit-date: 2022-08-20
host: x86_64-pc-windows-gnu
release: 1.65.0-nightly
LLVM version: 15.0.0

[mati865]

Quoting myself from #102243 (comment):

[..] EmuTLS used by GCC is just too messed up and causes problems for all languages that use TLS.
I don't think it's possible to workaround this problem in Rust but FWIW windows-gnullvm targets that I added not so long ago are working perfectly fine with it (although they are not tested on CI): #94872 (files) This is because LLVM uses native Windows TLS by default which is not implemented in GCC.