1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/bug-1885775.js b/js/src/jit-test/tests/collections/bug-1885775.js
new file mode 100644
index 0000000000..bc14c6d58b
--- /dev/null
+++ b/js/src/jit-test/tests/collections/bug-1885775.js
@@ -0,0 +1,12 @@
+// |jit-test| --enable-symbols-as-weakmap-keys; skip-if: getBuildConfiguration("release_or_beta")
+var code = `
+var m58 = new WeakMap;
+var sym = Symbol();
+m58.set(sym, ({ entry16: 0, length: 1 }));
+function testCompacting() {
+  gcslice(50000);
+}
+testCompacting(2, 100000, 50000);
+`;
+for (x = 0; x < 10000; ++x)
+  evaluate(code);