diff options
Diffstat (limited to 'js/src/jit-test/tests/debug/Frame-identity-06.js')
-rw-r--r-- | js/src/jit-test/tests/debug/Frame-identity-06.js | 45 |
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); |