From 8db81508a1ffe1c3873503a1cb2082d664714776 Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Mon, 20 Jan 2020 20:14:59 -0500
Subject: Bug 1415761 - Catch the exception and rethrow it after invoking
 custom elements reactions;

The spec was unclear on how CEReactions interact with thrown exceptions; see https://github.com/whatwg/html/issues/3217. The spec is now being clarified in https://github.com/whatwg/html/pull/3235.

Tag UXP Issue #1344
---
 parser/html/nsHtml5TreeOperation.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'parser')

diff --git a/parser/html/nsHtml5TreeOperation.cpp b/parser/html/nsHtml5TreeOperation.cpp
index d530cbba3..d747f80a8 100644
--- a/parser/html/nsHtml5TreeOperation.cpp
+++ b/parser/html/nsHtml5TreeOperation.cpp
@@ -450,7 +450,8 @@ nsHtml5TreeOperation::CreateHTMLElement(
       nsAutoMicroTask mt;
     }
     dom::AutoCEReaction
-      autoCEReaction(document->GetDocGroup()->CustomElementReactionsStack());
+      autoCEReaction(document->GetDocGroup()->CustomElementReactionsStack(),
+                     nullptr);
 
     nsCOMPtr<dom::Element> newElement;
     NS_NewHTMLElement(getter_AddRefs(newElement), nodeInfo.forget(),
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