1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/bug1667699.js b/js/src/jit-test/tests/warp/bug1667699.js
new file mode 100644
index 0000000000..a88115c7c5
--- /dev/null
+++ b/js/src/jit-test/tests/warp/bug1667699.js
@@ -0,0 +1,15 @@
+// |jit-test| --fast-warmup
+function f(s) {
+  // Trial-inline self-hosted |replace| and relazify.
+  for (var i = 0; i < 50; i++) {
+    s = s.replace("a", "b");
+  }
+  trialInline();
+  relazifyFunctions();
+
+  // Warp-compile.
+  for (var j = 0; j < 50; j++) {}
+
+  return s;
+}
+assertEq(f("a"), "b");