rust/tests/codegen/wasm_exceptions.rs
2024-02-26 11:10:18 +01:00

52 lines
1.2 KiB
Rust

//@ only-wasm32-bare
//@ compile-flags: -C panic=unwind
#![crate_type = "lib"]
#![feature(core_intrinsics)]
#![feature(rustc_attrs)]
extern {
fn may_panic();
#[rustc_nounwind]
fn log_number(number: usize);
}
struct LogOnDrop;
impl Drop for LogOnDrop {
fn drop(&mut self) {
unsafe { log_number(0); }
}
}
// CHECK-LABEL: @test_cleanup() {{.*}} @__gxx_wasm_personality_v0
#[no_mangle]
pub fn test_cleanup() {
let _log_on_drop = LogOnDrop;
unsafe { may_panic(); }
// CHECK-NOT: call
// CHECK: invoke void @may_panic()
// CHECK: %cleanuppad = cleanuppad within none []
}
// CHECK-LABEL: @test_rtry() {{.*}} @__gxx_wasm_personality_v0
#[no_mangle]
pub fn test_rtry() {
unsafe {
core::intrinsics::catch_unwind(|_| {
may_panic();
}, core::ptr::null_mut(), |data, exception| {
log_number(data as usize);
log_number(exception as usize);
});
}
// CHECK-NOT: call
// CHECK: invoke void @may_panic()
// CHECK: {{.*}} = catchswitch within none [label {{.*}}] unwind to caller
// CHECK: {{.*}} = catchpad within {{.*}} [ptr null]
// CHECK: catchret
}