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//@ run-pass
//@ needs-unwind
#![allow(dead_code)]
//@ compile-flags: -C codegen-units=3
//@ needs-threads
// Test unwinding through multiple compilation units.
// According to acrichto, in the distant past `ld -r` (which is used during
// linking when codegen-units > 1) was known to produce object files with
// damaged unwinding tables. This may be related to GNU binutils bug #6893
// ("Partial linking results in corrupt .eh_frame_hdr"), but I'm not certain.
// In any case, this test should let us know if enabling parallel codegen ever
// breaks unwinding.
use std::thread;
fn pad() -> usize { 0 }
mod a {
pub fn f() {
panic!();
}
}
mod b {
pub fn g() {
crate::a::f();
}
}
fn main() {
thread::spawn(move|| { b::g() }).join().unwrap_err();
}
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