rust/src/test/ui/generator/panic-drops.rs
Thomas Lively 62c3443e96 Re-enable Emscripten's exception handling support
Passes LLVM codegen and Emscripten link-time flags for exception
handling if and only if the panic strategy is `unwind`. Sets the
default panic strategy for Emscripten targets to `unwind`. Re-enables
tests that depend on unwinding support for Emscripten, including
`should_panic` tests.
2019-10-25 15:16:36 -07:00

57 lines
1.1 KiB
Rust

// run-pass
// ignore-wasm32-bare compiled with panic=abort by default
#![feature(generators, generator_trait)]
use std::ops::Generator;
use std::panic;
use std::pin::Pin;
use std::sync::atomic::{AtomicUsize, Ordering};
static A: AtomicUsize = AtomicUsize::new(0);
struct B;
impl Drop for B {
fn drop(&mut self) {
A.fetch_add(1, Ordering::SeqCst);
}
}
fn bool_true() -> bool {
true
}
fn main() {
let b = B;
let mut foo = || {
if bool_true() {
panic!();
}
drop(b);
yield;
};
assert_eq!(A.load(Ordering::SeqCst), 0);
let res = panic::catch_unwind(panic::AssertUnwindSafe(|| {
Pin::new(&mut foo).resume()
}));
assert!(res.is_err());
assert_eq!(A.load(Ordering::SeqCst), 1);
let mut foo = || {
if bool_true() {
panic!();
}
drop(B);
yield;
};
assert_eq!(A.load(Ordering::SeqCst), 1);
let res = panic::catch_unwind(panic::AssertUnwindSafe(|| {
Pin::new(&mut foo).resume()
}));
assert!(res.is_err());
assert_eq!(A.load(Ordering::SeqCst), 1);
}