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//@ only-wasm32
//@ assembly-output: emit-asm
//@ compile-flags: -C target-feature=+exception-handling
//@ compile-flags: -C panic=unwind
//@ compile-flags: -C llvm-args=-wasm-enable-eh
#![crate_type = "lib"]
#![feature(core_intrinsics)]
extern "C-unwind" {
fn may_panic();
}
extern "C" {
fn log_number(number: usize);
}
struct LogOnDrop;
impl Drop for LogOnDrop {
fn drop(&mut self) {
unsafe {
log_number(0);
}
}
}
// CHECK-LABEL: test_cleanup:
#[no_mangle]
pub fn test_cleanup() {
let _log_on_drop = LogOnDrop;
unsafe {
may_panic();
}
// CHECK-NOT: call
// CHECK: try
// CHECK: call may_panic
// CHECK: catch_all
// CHECK: rethrow
// CHECK: end_try
}
// CHECK-LABEL: test_rtry:
#[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: try
// CHECK: call may_panic
// CHECK: catch
// CHECK: call log_number
// CHECK: call log_number
// CHECK-NOT: rethrow
// CHECK: end_try
}
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