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//@ only-wasm32
//@ compile-flags: -C panic=unwind -Z emscripten-wasm-eh
#![crate_type = "lib"]
#![feature(core_intrinsics, wasm_exception_handling_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() {{.*}} @__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
}
// Make sure the intrinsic is not inferred as nounwind. This is a regression test for #132416.
// CHECK-LABEL: @test_intrinsic() {{.*}} @__gxx_wasm_personality_v0
#[no_mangle]
pub fn test_intrinsic() {
let _log_on_drop = LogOnDrop;
unsafe {
core::arch::wasm32::throw::<0>(core::ptr::null_mut());
}
// CHECK-NOT: call
// CHECK: invoke void @llvm.wasm.throw(i32 noundef 0, ptr noundef null)
// CHECK: %cleanuppad = cleanuppad within none []
}
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