Arm Fedora 24/25 build fix

1 files changed, 600 insertions, 0 deletions

diff --git a/mozilla-1337988.patch b/mozilla-1337988.patch
new file mode 100644
index 0000000..8e617da
--- /dev/null
+++ b/mozilla-1337988.patch
@@ -0,0 +1,600 @@
+diff -up firefox-53.0.2/dom/plugins/base/nsJSNPRuntime.cpp.1337988 firefox-53.0.2/dom/plugins/base/nsJSNPRuntime.cpp
+--- firefox-53.0.2/dom/plugins/base/nsJSNPRuntime.cpp.1337988	2017-04-11 06:15:22.000000000 +0200
++++ firefox-53.0.2/dom/plugins/base/nsJSNPRuntime.cpp	2017-05-16 12:24:52.615168435 +0200
+@@ -1746,7 +1746,7 @@ NPObjWrapper_ObjectMoved(JSObject *obj,
+   auto entry =
+     static_cast<NPObjWrapperHashEntry*>(sNPObjWrappers->Search(npobj));
+   MOZ_ASSERT(entry && entry->mJSObj);
+-  MOZ_ASSERT(entry->mJSObj == old);
++  MOZ_ASSERT(entry->mJSObj.unbarrieredGetPtr() == old);
+   entry->mJSObj = obj;
+ }
+ 
+diff -up firefox-53.0.2/js/ipc/JavaScriptShared.cpp.1337988 firefox-53.0.2/js/ipc/JavaScriptShared.cpp
+--- firefox-53.0.2/js/ipc/JavaScriptShared.cpp.1337988	2017-04-11 06:15:17.000000000 +0200
++++ firefox-53.0.2/js/ipc/JavaScriptShared.cpp	2017-05-16 12:24:52.615168435 +0200
+@@ -101,7 +101,7 @@ IdToObjectMap::has(const ObjectId& id, c
+     auto p = table_.lookup(id);
+     if (!p)
+         return false;
+-    return p->value() == obj;
++    return p->value().unbarrieredGet() == obj;
+ }
+ #endif
+ 
+diff -up firefox-53.0.2/js/public/RootingAPI.h.1337988 firefox-53.0.2/js/public/RootingAPI.h
+--- firefox-53.0.2/js/public/RootingAPI.h.1337988	2017-04-11 06:15:17.000000000 +0200
++++ firefox-53.0.2/js/public/RootingAPI.h	2017-05-16 12:33:02.437320374 +0200
+@@ -150,6 +150,10 @@ template<typename T>
+ struct PersistentRootedMarker;
+ } /* namespace gc */
+ 
++#define DECLARE_POINTER_COMPARISON_OPS(T)                                                         \
++    bool operator==(const T& other) const { return get() == other; }                              \
++    bool operator!=(const T& other) const { return get() != other; }
++
+ // Important: Return a reference so passing a Rooted<T>, etc. to
+ // something that takes a |const T&| is not a GC hazard.
+ #define DECLARE_POINTER_CONSTREF_OPS(T)                                                           \
+@@ -235,8 +239,6 @@ class Heap : public js::HeapBase<T, Heap
+     static_assert(js::IsHeapConstructibleType<T>::value,
+                   "Type T must be a public GC pointer type");
+   public:
+-    using ElementType = T;
+-
+     Heap() {
+         static_assert(sizeof(T) == sizeof(Heap<T>),
+                       "Heap<T> must be binary compatible with T.");
+@@ -371,8 +373,6 @@ template <typename T>
+ class TenuredHeap : public js::HeapBase<T, TenuredHeap<T>>
+ {
+   public:
+-    using ElementType = T;
+-
+     TenuredHeap() : bits(0) {
+         static_assert(sizeof(T) == sizeof(TenuredHeap<T>),
+                       "TenuredHeap<T> must be binary compatible with T.");
+@@ -380,6 +380,9 @@ class TenuredHeap : public js::HeapBase<
+     explicit TenuredHeap(T p) : bits(0) { setPtr(p); }
+     explicit TenuredHeap(const TenuredHeap<T>& p) : bits(0) { setPtr(p.getPtr()); }
+ 
++    bool operator==(const TenuredHeap<T>& other) { return bits == other.bits; }
++    bool operator!=(const TenuredHeap<T>& other) { return bits != other.bits; }
++
+     void setPtr(T newPtr) {
+         MOZ_ASSERT((reinterpret_cast<uintptr_t>(newPtr) & flagsMask) == 0);
+         if (newPtr)
+@@ -456,8 +459,6 @@ class MOZ_NONHEAP_CLASS Handle : public
+     friend class JS::MutableHandle<T>;
+ 
+   public:
+-    using ElementType = T;
+-
+     /* Creates a handle from a handle of a type convertible to T. */
+     template <typename S>
+     MOZ_IMPLICIT Handle(Handle<S> handle,
+@@ -518,6 +519,7 @@ class MOZ_NONHEAP_CLASS Handle : public
+     MOZ_IMPLICIT Handle(MutableHandle<S>& root,
+                         typename mozilla::EnableIf<mozilla::IsConvertible<S, T>::value, int>::Type dummy = 0);
+ 
++    DECLARE_POINTER_COMPARISON_OPS(T);
+     DECLARE_POINTER_CONSTREF_OPS(T);
+     DECLARE_NONPOINTER_ACCESSOR_METHODS(*ptr);
+ 
+@@ -544,8 +546,6 @@ template <typename T>
+ class MOZ_STACK_CLASS MutableHandle : public js::MutableHandleBase<T, MutableHandle<T>>
+ {
+   public:
+-    using ElementType = T;
+-
+     inline MOZ_IMPLICIT MutableHandle(Rooted<T>* root);
+     inline MOZ_IMPLICIT MutableHandle(PersistentRooted<T>* root);
+ 
+@@ -571,6 +571,7 @@ class MOZ_STACK_CLASS MutableHandle : pu
+         return h;
+     }
+ 
++    DECLARE_POINTER_COMPARISON_OPS(T);
+     DECLARE_POINTER_CONSTREF_OPS(T);
+     DECLARE_NONPOINTER_ACCESSOR_METHODS(*ptr);
+     DECLARE_NONPOINTER_MUTABLE_ACCESSOR_METHODS(*ptr);
+@@ -775,8 +776,6 @@ class MOZ_RAII Rooted : public js::Roote
+     }
+ 
+   public:
+-    using ElementType = T;
+-
+     template <typename RootingContext>
+     explicit Rooted(const RootingContext& cx)
+       : ptr(GCPolicy<T>::initial())
+@@ -806,6 +805,7 @@ class MOZ_RAII Rooted : public js::Roote
+         ptr = value;
+     }
+ 
++    DECLARE_POINTER_COMPARISON_OPS(T);
+     DECLARE_POINTER_CONSTREF_OPS(T);
+     DECLARE_POINTER_ASSIGN_OPS(Rooted, T);
+     DECLARE_NONPOINTER_ACCESSOR_METHODS(ptr);
+@@ -882,14 +882,13 @@ template <typename T>
+ class MOZ_RAII FakeRooted : public RootedBase<T, FakeRooted<T>>
+ {
+   public:
+-    using ElementType = T;
+-
+     template <typename CX>
+     explicit FakeRooted(CX* cx) : ptr(JS::GCPolicy<T>::initial()) {}
+ 
+     template <typename CX>
+     FakeRooted(CX* cx, T initial) : ptr(initial) {}
+ 
++    DECLARE_POINTER_COMPARISON_OPS(T);
+     DECLARE_POINTER_CONSTREF_OPS(T);
+     DECLARE_POINTER_ASSIGN_OPS(FakeRooted, T);
+     DECLARE_NONPOINTER_ACCESSOR_METHODS(ptr);
+@@ -910,8 +909,6 @@ template <typename T>
+ class FakeMutableHandle : public js::MutableHandleBase<T, FakeMutableHandle<T>>
+ {
+   public:
+-    using ElementType = T;
+-
+     MOZ_IMPLICIT FakeMutableHandle(T* t) {
+         ptr = t;
+     }
+@@ -1102,8 +1099,6 @@ class PersistentRooted : public js::Root
+     js::RootLists& rootLists(js::ContextFriendFields* cx) = delete;
+ 
+   public:
+-    using ElementType = T;
+-
+     PersistentRooted() : ptr(GCPolicy<T>::initial()) {}
+ 
+     template <typename RootingContext>
+@@ -1193,8 +1188,6 @@ class JS_PUBLIC_API(ObjectPtr)
+     Heap<JSObject*> value;
+ 
+   public:
+-    using ElementType = JSObject*;
+-
+     ObjectPtr() : value(nullptr) {}
+ 
+     explicit ObjectPtr(JSObject* obj) : value(obj) {}
+@@ -1297,177 +1290,6 @@ Swap(JS::TenuredHeap<T>& aX, JS::Tenured
+ 
+ } /* namespace mozilla */
+ 
+-namespace js {
+-namespace detail {
+-
+-// DefineComparisonOps is a trait which selects which wrapper classes to define
+-// operator== and operator!= for. It supplies a getter function to extract the
+-// value to compare. This is used to avoid triggering the automatic read
+-// barriers where appropriate.
+-//
+-// If DefineComparisonOps is not specialized for a particular wrapper you may
+-// get errors such as 'invalid operands to binary expression' or 'no match for
+-// operator==' when trying to compare against instances of the wrapper.
+-
+-template <typename T>
+-struct DefineComparisonOps : mozilla::FalseType {};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::Heap<T>> : mozilla::TrueType {
+-    static const T& get(const JS::Heap<T>& v) { return v.unbarrieredGet(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::TenuredHeap<T>> : mozilla::TrueType {
+-    static const T get(const JS::TenuredHeap<T>& v) { return v.unbarrieredGetPtr(); }
+-};
+-
+-template <>
+-struct DefineComparisonOps<JS::ObjectPtr> : mozilla::TrueType {
+-    static const JSObject* get(const JS::ObjectPtr& v) { return v.unbarrieredGet(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::Rooted<T>> : mozilla::TrueType {
+-    static const T& get(const JS::Rooted<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::Handle<T>> : mozilla::TrueType {
+-    static const T& get(const JS::Handle<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::MutableHandle<T>> : mozilla::TrueType {
+-    static const T& get(const JS::MutableHandle<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<JS::PersistentRooted<T>> : mozilla::TrueType {
+-    static const T& get(const JS::PersistentRooted<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<js::FakeRooted<T>> : mozilla::TrueType {
+-    static const T& get(const js::FakeRooted<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<js::FakeMutableHandle<T>> : mozilla::TrueType {
+-    static const T& get(const js::FakeMutableHandle<T>& v) { return v.get(); }
+-};
+-
+-} /* namespace detail */
+-} /* namespace js */
+-
+-// Overload operator== and operator!= for all types with the DefineComparisonOps
+-// trait using the supplied getter.
+-//
+-// There are four cases:
+-
+-// Case 1: comparison between two wrapper objects.
+-
+-template <typename T, typename U>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           js::detail::DefineComparisonOps<U>::value, bool>::Type
+-operator==(const T& a, const U& b) {
+-    return js::detail::DefineComparisonOps<T>::get(a) == js::detail::DefineComparisonOps<U>::get(b);
+-}
+-
+-template <typename T, typename U>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           js::detail::DefineComparisonOps<U>::value, bool>::Type
+-operator!=(const T& a, const U& b) {
+-    return !(a == b);
+-}
+-
+-// Case 2: comparison between a wrapper object and its unwrapped element type.
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value, bool>::Type
+-operator==(const T& a, const typename T::ElementType& b) {
+-    return js::detail::DefineComparisonOps<T>::get(a) == b;
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value, bool>::Type
+-operator!=(const T& a, const typename T::ElementType& b) {
+-    return !(a == b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value, bool>::Type
+-operator==(const typename T::ElementType& a, const T& b) {
+-    return a == js::detail::DefineComparisonOps<T>::get(b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value, bool>::Type
+-operator!=(const typename T::ElementType& a, const T& b) {
+-    return !(a == b);
+-}
+-
+-// Case 3: For pointer wrappers, comparison between the wrapper and a const
+-// element pointer.
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator==(const typename mozilla::RemovePointer<typename T::ElementType>::Type* a, const T& b) {
+-    return a == js::detail::DefineComparisonOps<T>::get(b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator!=(const typename mozilla::RemovePointer<typename T::ElementType>::Type* a, const T& b) {
+-    return !(a == b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator==(const T& a, const typename mozilla::RemovePointer<typename T::ElementType>::Type* b) {
+-    return js::detail::DefineComparisonOps<T>::get(a) == b;
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator!=(const T& a, const typename mozilla::RemovePointer<typename T::ElementType>::Type* b) {
+-    return !(a == b);
+-}
+-
+-// Case 4: For pointer wrappers, comparison between the wrapper and nullptr.
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator==(std::nullptr_t a, const T& b) {
+-    return a == js::detail::DefineComparisonOps<T>::get(b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator!=(std::nullptr_t a, const T& b) {
+-    return !(a == b);
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator==(const T& a, std::nullptr_t b) {
+-    return js::detail::DefineComparisonOps<T>::get(a) == b;
+-}
+-
+-template <typename T>
+-typename mozilla::EnableIf<js::detail::DefineComparisonOps<T>::value &&
+-                           mozilla::IsPointer<typename T::ElementType>::value, bool>::Type
+-operator!=(const T& a, std::nullptr_t b) {
+-    return !(a == b);
+-}
+-
+ #undef DELETE_ASSIGNMENT_OPS
+ 
+ #endif  /* js_RootingAPI_h */
+diff -up firefox-53.0.2/js/src/gc/Barrier.h.1337988 firefox-53.0.2/js/src/gc/Barrier.h
+--- firefox-53.0.2/js/src/gc/Barrier.h.1337988	2017-04-11 06:15:17.000000000 +0200
++++ firefox-53.0.2/js/src/gc/Barrier.h	2017-05-16 12:28:15.140404323 +0200
+@@ -349,8 +349,8 @@ class WriteBarrieredBase : public Barrie
+     explicit WriteBarrieredBase(const T& v) : BarrieredBase<T>(v) {}
+ 
+   public:
+-    using ElementType = T;
+ 
++    DECLARE_POINTER_COMPARISON_OPS(T);
+     DECLARE_POINTER_CONSTREF_OPS(T);
+ 
+     // Use this if the automatic coercion to T isn't working.
+@@ -601,13 +601,14 @@ class ReadBarriered : public ReadBarrier
+         return *this;
+     }
+ 
+-    const T& get() const {
+-        if (InternalBarrierMethods<T>::isMarkable(this->value))
+-            this->read();
++    const T get() const {
++        if (!InternalBarrierMethods<T>::isMarkable(this->value))
++            return JS::GCPolicy<T>::initial();
++        this->read();
+         return this->value;
+     }
+ 
+-    const T& unbarrieredGet() const {
++    const T unbarrieredGet() const {
+         return this->value;
+     }
+ 
+@@ -615,9 +616,9 @@ class ReadBarriered : public ReadBarrier
+         return bool(this->value);
+     }
+ 
+-    operator const T&() const { return get(); }
++    operator const T() const { return get(); }
+ 
+-    const T& operator->() const { return get(); }
++    const T operator->() const { return get(); }
+ 
+     T* unsafeGet() { return &this->value; }
+     T const* unsafeGet() const { return &this->value; }
+@@ -944,35 +945,6 @@ typedef ReadBarriered<WasmTableObject*>
+ 
+ typedef ReadBarriered<Value> ReadBarrieredValue;
+ 
+-namespace detail {
+-
+-template <typename T>
+-struct DefineComparisonOps<PreBarriered<T>> : mozilla::TrueType {
+-    static const T& get(const PreBarriered<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<GCPtr<T>> : mozilla::TrueType {
+-    static const T& get(const GCPtr<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<HeapPtr<T>> : mozilla::TrueType {
+-    static const T& get(const HeapPtr<T>& v) { return v.get(); }
+-};
+-
+-template <typename T>
+-struct DefineComparisonOps<ReadBarriered<T>> : mozilla::TrueType {
+-    static const T& get(const ReadBarriered<T>& v) { return v.unbarrieredGet(); }
+-};
+-
+-template <>
+-struct DefineComparisonOps<HeapSlot> : mozilla::TrueType {
+-    static const Value& get(const HeapSlot& v) { return v.get(); }
+-};
+-
+-} /* namespace detail */
+-
+ } /* namespace js */
+ 
+ #endif /* gc_Barrier_h */
+diff -up firefox-53.0.2/js/src/jsapi-tests/testGCHeapPostBarriers.cpp.1337988 firefox-53.0.2/js/src/jsapi-tests/testGCHeapPostBarriers.cpp
+--- firefox-53.0.2/js/src/jsapi-tests/testGCHeapPostBarriers.cpp.1337988	2017-04-11 06:15:18.000000000 +0200
++++ firefox-53.0.2/js/src/jsapi-tests/testGCHeapPostBarriers.cpp	2017-05-16 12:24:52.616168431 +0200
+@@ -5,7 +5,6 @@
+  * License, v. 2.0. If a copy of the MPL was not distributed with this
+  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+-#include "mozilla/TypeTraits.h"
+ #include "mozilla/UniquePtr.h"
+ 
+ #include "js/RootingAPI.h"
+@@ -152,111 +151,3 @@ TestHeapPostBarrierInitFailure()
+ }
+ 
+ END_TEST(testGCHeapPostBarriers)
+-
+-BEGIN_TEST(testUnbarrieredEquality)
+-{
+-    // Use ArrayBuffers because they have finalizers, which allows using them
+-    // in ObjectPtr without awkward conversations about nursery allocatability.
+-    JS::RootedObject robj(cx, JS_NewArrayBuffer(cx, 20));
+-    JS::RootedObject robj2(cx, JS_NewArrayBuffer(cx, 30));
+-    cx->gc.evictNursery(); // Need tenured objects
+-
+-    // Need some bare pointers to compare against.
+-    JSObject* obj = robj;
+-    JSObject* obj2 = robj2;
+-    const JSObject* constobj = robj;
+-    const JSObject* constobj2 = robj2;
+-
+-    // Make them gray. We will make sure they stay gray. (For most reads, the
+-    // barrier will unmark gray.)
+-    using namespace js::gc;
+-    TenuredCell* cell = &obj->asTenured();
+-    TenuredCell* cell2 = &obj2->asTenured();
+-    cell->markIfUnmarked(GRAY);
+-    cell2->markIfUnmarked(GRAY);
+-    MOZ_ASSERT(cell->isMarked(GRAY));
+-    MOZ_ASSERT(cell2->isMarked(GRAY));
+-
+-    {
+-        JS::Heap<JSObject*> heap(obj);
+-        JS::Heap<JSObject*> heap2(obj2);
+-        CHECK(TestWrapper(obj, obj2, heap, heap2));
+-        CHECK(TestWrapper(constobj, constobj2, heap, heap2));
+-    }
+-
+-    {
+-        JS::TenuredHeap<JSObject*> heap(obj);
+-        JS::TenuredHeap<JSObject*> heap2(obj2);
+-        CHECK(TestWrapper(obj, obj2, heap, heap2));
+-        CHECK(TestWrapper(constobj, constobj2, heap, heap2));
+-    }
+-
+-    {
+-        JS::ObjectPtr objptr(obj);
+-        JS::ObjectPtr objptr2(obj2);
+-        CHECK(TestWrapper(obj, obj2, objptr, objptr2));
+-        CHECK(TestWrapper(constobj, constobj2, objptr, objptr2));
+-        objptr.finalize(cx);
+-        objptr2.finalize(cx);
+-    }
+-
+-    // Sanity check that the barriers normally mark things black.
+-    {
+-        JS::Heap<JSObject*> heap(obj);
+-        JS::Heap<JSObject*> heap2(obj2);
+-        heap.get();
+-        heap2.get();
+-        CHECK(cell->isMarked(BLACK));
+-        CHECK(cell2->isMarked(BLACK));
+-    }
+-
+-    return true;
+-}
+-
+-template <typename ObjectT, typename WrapperT>
+-bool
+-TestWrapper(ObjectT obj, ObjectT obj2, WrapperT& wrapper, WrapperT& wrapper2)
+-{
+-    using namespace js::gc;
+-
+-    const TenuredCell& cell = obj->asTenured();
+-    const TenuredCell& cell2 = obj2->asTenured();
+-
+-    int x = 0;
+-
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += obj == obj2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += obj == wrapper2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += wrapper == obj2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += wrapper == wrapper2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-
+-    CHECK(x == 0);
+-
+-    x += obj != obj2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += obj != wrapper2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += wrapper != obj2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-    x += wrapper != wrapper2;
+-    CHECK(cell.isMarked(GRAY));
+-    CHECK(cell2.isMarked(GRAY));
+-
+-    CHECK(x == 4);
+-
+-    return true;
+-}
+-
+-END_TEST(testUnbarrieredEquality)
+diff -up firefox-53.0.2/js/src/vm/SharedMem.h.1337988 firefox-53.0.2/js/src/vm/SharedMem.h
+--- firefox-53.0.2/js/src/vm/SharedMem.h.1337988	2017-04-11 06:15:18.000000000 +0200
++++ firefox-53.0.2/js/src/vm/SharedMem.h	2017-05-16 12:24:52.616168431 +0200
+@@ -12,8 +12,8 @@
+ template<typename T>
+ class SharedMem
+ {
+-    // static_assert(mozilla::IsPointer<T>::value,
+-    //               "SharedMem encapsulates pointer types");
++    static_assert(mozilla::IsPointer<T>::value,
++                  "SharedMem encapsulates pointer types");
+ 
+     enum Sharedness {
+         IsUnshared,
+diff -up firefox-53.0.2/js/xpconnect/src/XPCInlines.h.1337988 firefox-53.0.2/js/xpconnect/src/XPCInlines.h
+--- firefox-53.0.2/js/xpconnect/src/XPCInlines.h.1337988	2017-04-11 06:15:18.000000000 +0200
++++ firefox-53.0.2/js/xpconnect/src/XPCInlines.h	2017-05-16 12:24:52.616168431 +0200
+@@ -471,7 +471,7 @@ inline
+ void XPCWrappedNativeTearOff::JSObjectMoved(JSObject* obj, const JSObject* old)
+ {
+     MOZ_ASSERT(!IsMarked());
+-    MOZ_ASSERT(mJSObject == old);
++    MOZ_ASSERT(mJSObject.unbarrieredGetPtr() == old);
+     mJSObject = obj;
+ }
+ 
+diff -up firefox-53.0.2/js/xpconnect/src/XPCWrappedNative.cpp.1337988 firefox-53.0.2/js/xpconnect/src/XPCWrappedNative.cpp
+--- firefox-53.0.2/js/xpconnect/src/XPCWrappedNative.cpp.1337988	2017-04-11 06:15:18.000000000 +0200
++++ firefox-53.0.2/js/xpconnect/src/XPCWrappedNative.cpp	2017-05-16 12:24:52.616168431 +0200
+@@ -888,7 +888,7 @@ void
+ XPCWrappedNative::FlatJSObjectMoved(JSObject* obj, const JSObject* old)
+ {
+     JS::AutoAssertGCCallback inCallback(obj);
+-    MOZ_ASSERT(mFlatJSObject == old);
++    MOZ_ASSERT(mFlatJSObject.unbarrieredGetPtr() == old);
+ 
+     nsWrapperCache* cache = nullptr;
+     CallQueryInterface(mIdentity, &cache);
+diff -up firefox-53.0.2/js/xpconnect/src/XPCWrappedNativeProto.cpp.1337988 firefox-53.0.2/js/xpconnect/src/XPCWrappedNativeProto.cpp
+--- firefox-53.0.2/js/xpconnect/src/XPCWrappedNativeProto.cpp.1337988	2017-04-11 06:15:18.000000000 +0200
++++ firefox-53.0.2/js/xpconnect/src/XPCWrappedNativeProto.cpp	2017-05-16 12:24:52.616168431 +0200
+@@ -101,7 +101,7 @@ XPCWrappedNativeProto::CallPostCreatePro
+ void
+ XPCWrappedNativeProto::JSProtoObjectFinalized(js::FreeOp* fop, JSObject* obj)
+ {
+-    MOZ_ASSERT(obj == mJSProtoObject, "huh?");
++    MOZ_ASSERT(obj == mJSProtoObject.unbarrieredGet(), "huh?");
+ 
+     // Only remove this proto from the map if it is the one in the map.
+     ClassInfo2WrappedNativeProtoMap* map = GetScope()->GetWrappedNativeProtoMap();
+@@ -116,7 +116,7 @@ XPCWrappedNativeProto::JSProtoObjectFina
+ void
+ XPCWrappedNativeProto::JSProtoObjectMoved(JSObject* obj, const JSObject* old)
+ {
+-    MOZ_ASSERT(mJSProtoObject == old);
++    MOZ_ASSERT(mJSProtoObject.unbarrieredGet() == old);
+     mJSProtoObject.init(obj); // Update without triggering barriers.
+ }
+