1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/resumption-09.js b/js/src/jit-test/tests/debug/resumption-09.js
new file mode 100644
index 0000000000..5a04a32aea
--- /dev/null
+++ b/js/src/jit-test/tests/debug/resumption-09.js
@@ -0,0 +1,41 @@
+// Test exception stack behavior when reusing completion values as resumption
+// values.
+
+load(libdir + "asserts.js");
+
+var g = newGlobal({newCompartment: true});
+g.eval(`
+  function foo() {
+    bar();
+  }
+  function bar() {
+    debugger;
+  }
+  function baz() {
+    throw new Error();
+  }
+`);
+
+var dbg = Debugger(g);
+dbg.onDebuggerStatement = frame => {
+  return frame.eval("baz()");
+};
+
+let popHits = 0;
+dbg.onEnterFrame = frame => {
+  frame.onPop = completion => {
+    popHits++;
+    // Resumption values ignore any 'stack' property, and the script location of
+    // the place where the hook was called will be used when throwing.
+    if (popHits <= 2) {
+      assertEq(completion.stack.functionDisplayName, "baz");
+    } else {
+      assertEq(completion.stack.functionDisplayName, "bar");
+    }
+  };
+};
+
+try {
+  g.eval("foo()");
+} catch (e) {}
+assertEq(popHits, 5);