From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/bindings/test/test_throwing_method_noDCE.html | 27 +++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 dom/bindings/test/test_throwing_method_noDCE.html

(limited to 'dom/bindings/test/test_throwing_method_noDCE.html')
diff --git a/dom/bindings/test/test_throwing_method_noDCE.html b/dom/bindings/test/test_throwing_method_noDCE.html
new file mode 100644
index 000000000..e952819a8
--- /dev/null
+++ b/dom/bindings/test/test_throwing_method_noDCE.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Test that we don't DCE functions that can throw</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  function test(root) {
+    var threw = false;
+    try {
+        root.querySelectorAll("");
+    } catch(e){ threw = true; };
+    // Hot loop to make sure the JIT heuristics ion-compile this function even
+    // though it's throwing exceptions (which would normally make us back off
+    // of ion compilation).
+    for (var i=0; i<1500; i++) {}
+    return threw;
+  }
+
+  var threw = false;
+  var el = document.createElement("div");
+  for (var i=0; i<200; i++)
+      threw = test(el);
+  assert_true(threw);
+}, "Shouldn't optimize away throwing functions");
+</script>
-- 
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