From 6822460d3b0d4609ee5d4e1ab4b093799ed06580 Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Mon, 19 Mar 2018 15:18:37 +0100
Subject: Bug 1317309: Throw a TypeError when passing a Symbol value to ToAtom

Issue #78
[Depends on] Bug 883377: Implement ES6 function "name" property
semantics
---
 js/src/jsatom.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'js/src/jsatom.cpp')

diff --git a/js/src/jsatom.cpp b/js/src/jsatom.cpp
index 3f8e8d8f8..2a3c58638 100644
--- a/js/src/jsatom.cpp
+++ b/js/src/jsatom.cpp
@@ -510,6 +510,14 @@ ToAtomSlow(ExclusiveContext* cx, typename MaybeRooted<Value, allowGC>::HandleTyp
         return v.toBoolean() ? cx->names().true_ : cx->names().false_;
     if (v.isNull())
         return cx->names().null;
+    if (v.isSymbol()) {
+        if (cx->shouldBeJSContext() && allowGC) {
+            JS_ReportErrorNumberASCII(cx->asJSContext(), GetErrorMessage, nullptr,
+                                      JSMSG_SYMBOL_TO_STRING);
+        }
+        return nullptr;
+    }
+    MOZ_ASSERT(v.isUndefined());
     return cx->names().undefined;
 }
 
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