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-rw-r--r--js/src/jit-test/tests/collections/bug-1863391-2.js6
1 files changed, 6 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/bug-1863391-2.js b/js/src/jit-test/tests/collections/bug-1863391-2.js
new file mode 100644
index 0000000000..5174f5ff16
--- /dev/null
+++ b/js/src/jit-test/tests/collections/bug-1863391-2.js
@@ -0,0 +1,6 @@
+// |jit-test| --enable-symbols-as-weakmap-keys; skip-if: helperThreadCount() === 0 || getBuildConfiguration("release_or_beta")
+evalInWorker(`
+ a = new WeakMap
+ b = Symbol.hasInstance;
+ a.set(b, 2);
+`);