1 files changed, 59 insertions, 0 deletions
diff --git a/tests/codegen-llvm/wasm_exceptions.rs b/tests/codegen-llvm/wasm_exceptions.rs
new file mode 100644
index 00000000000..07b8ae6e9d7
--- /dev/null
+++ b/tests/codegen-llvm/wasm_exceptions.rs
@@ -0,0 +1,59 @@
+//@ only-wasm32
+//@ compile-flags: -C panic=unwind -Z emscripten-wasm-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() {{.*}} @__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
+}