Reproduction case for https://github.com/wasmerio/wasmer-reborn/pull/125 .

backtrace-bug.rs

use backtrace::Backtrace;
use std::{mem, ptr};

#[inline(never)]
fn f(x: i32) -> i32 {
    if x == 0 || x == 1 {
        1
    } else {
        f(x - 1) + f(x - 2)
    }
}

fn main() {
    unsafe {
        let mut handler: libc::sigaction = mem::zeroed();
        handler.sa_flags = libc::SA_ONSTACK;
        handler.sa_sigaction = trap_handler as usize;
        libc::sigemptyset(&mut handler.sa_mask);
        assert_eq!(libc::sigaction(libc::SIGSEGV, &handler, ptr::null_mut()), 0);

        // Backtracing from a normal SIGSEGV works
        //println!("Before invalid write");
        //ptr::write_volatile(0 as *mut u32, 0);
        //println!("After invalid write");

        // Backtracing from a stack overflow crashes
        println!("Before stack overflow");
        println!("{}", f(0xfffffff));
        println!("After stack overflow");
    }
}

unsafe extern "C" fn trap_handler(
    _: libc::c_int
) {
    println!("Backtrace begin");
    let backtrace = Backtrace::new_unresolved();
    println!("Backtrace result: {:?}", backtrace);
}