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-rw-r--r--js/src/jit-test/tests/debug/Frame-identity-06.js45
1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-identity-06.js b/js/src/jit-test/tests/debug/Frame-identity-06.js
new file mode 100644
index 0000000000..04eb16b386
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-identity-06.js
@@ -0,0 +1,45 @@
+// Debugger.Frames for async functions are not GC'd while they're suspended.
+// The awaited promise keeps the generator alive, via its reaction lists.
+
+var g = newGlobal({newCompartment: true});
+g.eval(`
+ // Create a few promises.
+ var promises = [], resolvers = [];
+ for (let i = 0; i < 3; i++)
+ promises.push(new Promise(r => { resolvers.push(r); }));
+
+ async function f() {
+ debugger;
+ for (let p of promises) {
+ await p;
+ debugger;
+ }
+ }
+`);
+var dbg = new Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+ if (hits === 0)
+ frame.seen = true;
+ else
+ assertEq(frame.seen, true);
+ hits++;
+};
+
+let done = false;
+g.f().then(_ => { done = true; });
+gc();
+drainJobQueue();
+gc();
+
+// Resolve the promises one by one.
+for (let [i, resolve] of g.resolvers.entries()) {
+ assertEq(hits, 1 + i);
+ assertEq(done, false);
+ resolve("x");
+ gc();
+ drainJobQueue();
+ gc();
+}
+assertEq(hits, 1 + g.resolvers.length);
+assertEq(done, true);