Title: [282531] releases/WebKitGTK/webkit-2.32/Source/WTF
- Revision
- 282531
- Author
- [email protected]
- Date
- 2021-09-16 03:36:13 -0700 (Thu, 16 Sep 2021)
Log Message
Merge r278132 - [Hardening] Have the Ref<> destructor null out its pointer
https://bugs.webkit.org/show_bug.cgi?id=226293
<rdar://problem/78532149>
Reviewed by Geoffrey Garen.
* wtf/Ref.h:
(WTF::Ref::~Ref):
Modified Paths
Diff
Modified: releases/WebKitGTK/webkit-2.32/Source/WTF/ChangeLog (282530 => 282531)
--- releases/WebKitGTK/webkit-2.32/Source/WTF/ChangeLog 2021-09-16 10:32:28 UTC (rev 282530)
+++ releases/WebKitGTK/webkit-2.32/Source/WTF/ChangeLog 2021-09-16 10:36:13 UTC (rev 282531)
@@ -1,3 +1,14 @@
+2021-05-26 Chris Dumez <[email protected]>
+
+ [Hardening] Have the Ref<> destructor null out its pointer
+ https://bugs.webkit.org/show_bug.cgi?id=226293
+ <rdar://problem/78532149>
+
+ Reviewed by Geoffrey Garen.
+
+ * wtf/Ref.h:
+ (WTF::Ref::~Ref):
+
2021-05-17 Wenson Hsieh <[email protected]>
[GPU Process] Object identifiers with the deleted value should cause MESSAGE_CHECKs
Modified: releases/WebKitGTK/webkit-2.32/Source/WTF/wtf/Ref.h (282530 => 282531)
--- releases/WebKitGTK/webkit-2.32/Source/WTF/wtf/Ref.h 2021-09-16 10:32:28 UTC (rev 282530)
+++ releases/WebKitGTK/webkit-2.32/Source/WTF/wtf/Ref.h 2021-09-16 10:36:13 UTC (rev 282531)
@@ -57,8 +57,8 @@
if (__asan_address_is_poisoned(this))
__asan_unpoison_memory_region(this, sizeof(*this));
#endif
- if (m_ptr)
- PtrTraits::unwrap(m_ptr)->deref();
+ if (auto* ptr = PtrTraits::exchange(m_ptr, nullptr))
+ ptr->deref();
}
Ref(T& object)
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