1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/regress/debug-osr.js b/js/src/jit-test/tests/wasm/regress/debug-osr.js
new file mode 100644
index 0000000000..e8d3285ed4
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/regress/debug-osr.js
@@ -0,0 +1,16 @@
+// |jit-test| skip-if: !wasmDebuggingEnabled()
+g = newGlobal({newCompartment: true});
+g.parent = this;
+g.eval("(" + function() {
+    Debugger(parent).onExceptionUnwind = function(frame) {
+        frame.older
+    }
+} + ")()");
+
+let o = {};
+
+let func = wasmEvalText(`
+  (module (import "" "inc" (func $imp)) (func) (func $start (call $imp)) (start $start) (export "" (func $start)))
+`, { "": { inc: function() { o = o.set; } } }).exports[""];
+
+assertErrorMessage(func, TypeError, /(is|of) undefined/);