1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/ion-error-throw.js b/js/src/jit-test/tests/wasm/ion-error-throw.js
new file mode 100644
index 0000000000..c760dbe237
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/ion-error-throw.js
@@ -0,0 +1,43 @@
+// |jit-test| skip-if: !getJitCompilerOptions()['baseline.enable']
+// These tests need at least baseline to make sense.
+
+const { assertStackTrace, startProfiling, endProfiling, assertEqPreciseStacks } = WasmHelpers;
+
+enableGeckoProfiling();
+
+let { add } = wasmEvalText(`(module
+    (func (export "add") (param i32) (param i32) (result i32)
+     local.get 0
+     i32.const 42
+     i32.eq
+     if
+         unreachable
+     end
+
+     local.get 0
+     local.get 1
+     i32.add
+    )
+)`).exports;
+
+const SLOW_ENTRY_STACK = ['', '!>', '0,!>', '!>', ''];
+const FAST_ENTRY_STACK = ['', '>', '0,>', '>', ''];
+const FAST_ENTRY_STACK_THROW = ['', '>', '0,>', '>', '', '>', ''];
+const INLINED_CALL_STACK = ['', '0', ''];
+
+function main() {
+    for (let i = 0; i < 50; i++) {
+        startProfiling();
+        try {
+            assertEq(add(i, i+1), 2*i+1);
+        } catch (e) {
+            assertEq(i, 42);
+            assertEq(e.message.includes("unreachable"), true);
+            assertStackTrace(e, ['wasm-function[0]', 'main', '']);
+        }
+        let stack = endProfiling();
+        assertEqPreciseStacks(stack, [INLINED_CALL_STACK, FAST_ENTRY_STACK, FAST_ENTRY_STACK_THROW, SLOW_ENTRY_STACK]);
+    }
+}
+
+main();