1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/gc/bug-1749298.js b/js/src/jit-test/tests/gc/bug-1749298.js
new file mode 100644
index 0000000000..7fa184501f
--- /dev/null
+++ b/js/src/jit-test/tests/gc/bug-1749298.js
@@ -0,0 +1,17 @@
+// Test that a finalization registry target that is reachable from its global
+// does not keep the global alive indefinitely.
+
+let global = newGlobal({newCompartment: true});
+global.eval(`
+  this.target = {};  // Target is reachable from global.
+  this.registry = new FinalizationRegistry(() => assertEq(0, 1));
+  registry.register(target, 'held');
+  this.finalizeObserver = makeFinalizeObserver();
+`);
+
+assertEq(finalizeCount(), 0);
+
+global = undefined;
+gc();
+
+assertEq(finalizeCount(), 1);