1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/non262/BigInt/property-name-guessed-name.js b/js/src/tests/non262/BigInt/property-name-guessed-name.js
new file mode 100644
index 0000000000..feb91345b2
--- /dev/null
+++ b/js/src/tests/non262/BigInt/property-name-guessed-name.js
@@ -0,0 +1,21 @@
+// |reftest| skip-if(!xulRuntime.shell)
+
+// BigInts currently don't participate when computing guessed function names.
+
+var p = {};
+p[1] = function(){};
+p[2n] = function(){};
+
+assertEq(displayName(p[1]), "p[1]");
+assertEq(displayName(p[2]), "");
+
+var q = {
+  1: [function(){}],
+  2n: [function(){}],
+};
+
+assertEq(displayName(q[1][0]), "q[1]<");
+assertEq(displayName(q[2][0]), "q<");
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);