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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/185564">185564</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2015-06-15 12:36:44 -0700 (Mon, 15 Jun 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/185487">r185487</a>. rdar://problem/21277462</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreChangeLog">tags/Safari-601.1.35.1/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreheapHeapcpp">tags/Safari-601.1.35.1/Source/JavaScriptCore/heap/Heap.cpp</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreinterpreterCallFrameh">tags/Safari-601.1.35.1/Source/JavaScriptCore/interpreter/CallFrame.h</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreruntimeExceptioncpp">tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.cpp</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreruntimeExceptionh">tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.h</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreruntimeVMh">tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VM.h</a></li>
<li><a href="#tagsSafari6011351SourceJavaScriptCoreruntimeVMEntryScopecpp">tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VMEntryScope.cpp</a></li>
<li><a href="#tagsSafari6011351SourceWebCoreChangeLog">tags/Safari-601.1.35.1/Source/WebCore/ChangeLog</a></li>
<li><a href="#tagsSafari6011351SourceWebCorebindingsjsJSDOMBindingcpp">tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.cpp</a></li>
<li><a href="#tagsSafari6011351SourceWebCorebindingsjsJSDOMBindingh">tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.h</a></li>
<li><a href="#tagsSafari6011351SourceWebKitmacChangeLog">tags/Safari-601.1.35.1/Source/WebKit/mac/ChangeLog</a></li>
<li><a href="#tagsSafari6011351SourceWebKitmacWebViewWebViewmm">tags/Safari-601.1.35.1/Source/WebKit/mac/WebView/WebView.mm</a></li>
<li><a href="#tagsSafari6011351SourceWebKitwinChangeLog">tags/Safari-601.1.35.1/Source/WebKit/win/ChangeLog</a></li>
<li><a href="#tagsSafari6011351SourceWebKitwinWebViewcpp">tags/Safari-601.1.35.1/Source/WebKit/win/WebView.cpp</a></li>
<li><a href="#tagsSafari6011351SourceWebKit2ChangeLog">tags/Safari-601.1.35.1/Source/WebKit2/ChangeLog</a></li>
<li><a href="#tagsSafari6011351SourceWebKit2WebProcessInjectedBundleInjectedBundlecpp">tags/Safari-601.1.35.1/Source/WebKit2/WebProcess/InjectedBundle/InjectedBundle.cpp</a></li>
<li><a href="#tagsSafari6011351ToolsChangeLog">tags/Safari-601.1.35.1/Tools/ChangeLog</a></li>
<li><a href="#tagsSafari6011351ToolsTestWebKitAPITestsmacWebViewDidCreateJavaScriptContextmm">tags/Safari-601.1.35.1/Tools/TestWebKitAPI/Tests/mac/WebViewDidCreateJavaScriptContext.mm</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="tagsSafari6011351SourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,75 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            In r185259, we changed exception handling code inside the VM to work with
+            Exception objects instead of the thrown JSValue.  The handling code will get the
+            exception stack trace from the Exception object.
+
+            However, there is some code that cannot be updated to pass the Exception object.
+            An example of this are the ObjC API functions.  Those functions are specified to
+            return any thrown exception JSValue in a JSValueRef.  Since these APIs are
+            public, we cannot arbitrarily change them to use the Exception object.
+
+            There are client code that calls these APIs and then passes the returned exception
+            JSValue to WebCore::reportException() to be reported.  WebCore::reportException()
+            previously relied on the VM::exceptionStackTrace() to provide a cache of the
+            stack trace of the last thrown exception.  VM::exceptionStackTrace() no longer
+            exists in the current code.
+
+            To restore this functionality, we will introduce VM::lastException() which
+            caches the last thrown Exception object.  With this, if the exception passed to
+            WebCore::reportException() to be reported isn't an Exception object (which has its
+            own stack trace), reportException() can again use the cached exception stack trace
+            which is available from VM::lastException().
+
+            * heap/Heap.cpp:
+            (JSC::Heap::visitException):
+            - visit VM::m_lastException on GCs.
+
+            * interpreter/CallFrame.h:
+            (JSC::ExecState::lastException):
+            (JSC::ExecState::clearLastException):
+            - convenience functions to get and clear the last exception.
+
+            * runtime/Exception.cpp:
+            (JSC::Exception::create):
+            (JSC::Exception::finishCreation):
+            - add support to create an Exception object without capturing the JS stack trace.
+              This is needed for making an Exception object to wrap a thrown value that does
+              not have a stack trace.
+              Currently, this is only used by WebCore::reportException() when there is no
+              Exception object and no last exception available to provide a stack trace.
+
+            * runtime/Exception.h:
+            (JSC::Exception::cast): Deleted.  No longer needed.
+
+            * runtime/VM.h:
+            (JSC::VM::clearLastException):
+            (JSC::VM::setException):
+            (JSC::VM::lastException):
+            (JSC::VM::addressOfLastException):
+            - Added support for VM::m_lastException.
+              VM::m_lastException serves to cache the exception stack of the most recently
+              thrown exception like VM::exceptionStackTrace() used to before r185259.
+
+            * runtime/VMEntryScope.cpp:
+            (JSC::VMEntryScope::VMEntryScope):
+            - Clear VM::m_lastException when we re-enter the VM.  Exceptions should have been
+              handled before we re-enter the VM anyway.  So, this is a good place to release
+              the cached last exception.
+
+              NOTE: this is also where the old code before r185259 clears the last exception
+              stack trace.  So, we're just restoring the previous behavior here in terms of
+              the lifecycle of the last exception stack.
+
</ins><span class="cx"> 2015-06-12  Babak Shafiei  &lt;bshafiei@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Custom patch to turn off ENABLE_PICTURE_SIZES. rdar://problem/21129111
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreheapHeapcpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/heap/Heap.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/heap/Heap.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/heap/Heap.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -717,10 +717,11 @@
</span><span class="cx"> void Heap::visitException(HeapRootVisitor&amp; visitor)
</span><span class="cx"> {
</span><span class="cx">     GCPHASE(MarkingException);
</span><del>-    if (!m_vm-&gt;exception())
</del><ins>+    if (!m_vm-&gt;exception() &amp;&amp; !m_vm-&gt;lastException())
</ins><span class="cx">         return;
</span><span class="cx"> 
</span><span class="cx">     visitor.visit(m_vm-&gt;addressOfException());
</span><ins>+    visitor.visit(m_vm-&gt;addressOfLastException());
</ins><span class="cx"> 
</span><span class="cx">     if (Options::logGC() == GCLogging::Verbose)
</span><span class="cx">         dataLog(&quot;Exceptions:\n&quot;, m_slotVisitor);
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreinterpreterCallFrameh"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/interpreter/CallFrame.h (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/interpreter/CallFrame.h        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/interpreter/CallFrame.h        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -79,6 +79,9 @@
</span><span class="cx">         Exception* exception() const { return vm().exception(); }
</span><span class="cx">         bool hadException() const { return !!vm().exception(); }
</span><span class="cx"> 
</span><ins>+        Exception* lastException() const { return vm().lastException(); }
+        void clearLastException() { vm().clearLastException(); }
+
</ins><span class="cx">         AtomicStringTable* atomicStringTable() const { return vm().atomicStringTable(); }
</span><span class="cx">         const CommonIdentifiers&amp; propertyNames() const { return *vm().propertyNames; }
</span><span class="cx">         const MarkedArgumentBuffer&amp; emptyList() const { return *vm().emptyList; }
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreruntimeExceptioncpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -32,10 +32,10 @@
</span><span class="cx"> 
</span><span class="cx"> const ClassInfo Exception::s_info = { &quot;Exception&quot;, &amp;Base::s_info, 0, CREATE_METHOD_TABLE(Exception) };
</span><span class="cx"> 
</span><del>-Exception* Exception::create(VM&amp; vm, JSValue thrownValue)
</del><ins>+Exception* Exception::create(VM&amp; vm, JSValue thrownValue, StackCaptureAction action)
</ins><span class="cx"> {
</span><span class="cx">     Exception* result = new (NotNull, allocateCell&lt;Exception&gt;(vm.heap)) Exception(vm);
</span><del>-    result-&gt;finishCreation(vm, thrownValue);
</del><ins>+    result-&gt;finishCreation(vm, thrownValue, action);
</ins><span class="cx">     return result;
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -68,14 +68,15 @@
</span><span class="cx"> {
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void Exception::finishCreation(VM&amp; vm, JSValue thrownValue)
</del><ins>+void Exception::finishCreation(VM&amp; vm, JSValue thrownValue, StackCaptureAction action)
</ins><span class="cx"> {
</span><span class="cx">     Base::finishCreation(vm);
</span><span class="cx"> 
</span><span class="cx">     m_value.set(vm, this, thrownValue);
</span><span class="cx"> 
</span><span class="cx">     Vector&lt;StackFrame&gt; stackTrace;
</span><del>-    vm.interpreter-&gt;getStackTrace(stackTrace);
</del><ins>+    if (action == StackCaptureAction::CaptureStack)
+        vm.interpreter-&gt;getStackTrace(stackTrace);
</ins><span class="cx">     m_stack = RefCountedArray&lt;StackFrame&gt;(stackTrace);
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreruntimeExceptionh"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.h (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.h        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/Exception.h        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -36,7 +36,11 @@
</span><span class="cx">     typedef JSNonFinalObject Base;
</span><span class="cx">     static const unsigned StructureFlags = StructureIsImmortal | Base::StructureFlags;
</span><span class="cx"> 
</span><del>-    static Exception* create(VM&amp;, JSValue thrownValue);
</del><ins>+    enum StackCaptureAction {
+        CaptureStack,
+        DoNotCaptureStack
+    };
+    JS_EXPORT_PRIVATE static Exception* create(VM&amp;, JSValue thrownValue, StackCaptureAction = CaptureStack);
</ins><span class="cx"> 
</span><span class="cx">     static const bool needsDestruction = true;
</span><span class="cx">     static void destroy(JSCell*);
</span><span class="lines">@@ -52,11 +56,6 @@
</span><span class="cx">         return OBJECT_OFFSETOF(Exception, m_value);
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    static Exception* cast(JSValue exceptionAsJSValue)
-    {
-        return jsCast&lt;Exception*&gt;(exceptionAsJSValue.asCell());
-    }
-
</del><span class="cx">     JSValue value() const { return m_value.get(); }
</span><span class="cx">     const RefCountedArray&lt;StackFrame&gt;&amp; stack() const { return m_stack; }
</span><span class="cx"> 
</span><span class="lines">@@ -67,7 +66,7 @@
</span><span class="cx"> 
</span><span class="cx"> private:
</span><span class="cx">     Exception(VM&amp;);
</span><del>-    void finishCreation(VM&amp;, JSValue thrownValue);
</del><ins>+    void finishCreation(VM&amp;, JSValue thrownValue, StackCaptureAction);
</ins><span class="cx"> 
</span><span class="cx">     WriteBarrier&lt;Unknown&gt; m_value;
</span><span class="cx">     RefCountedArray&lt;StackFrame&gt; m_stack;
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreruntimeVMh"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VM.h (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VM.h        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VM.h        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -374,11 +374,20 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     void clearException() { m_exception = nullptr; }
</span><del>-    void setException(Exception* exception) { m_exception = exception; }
</del><ins>+    void clearLastException() { m_lastException = nullptr; }
</ins><span class="cx"> 
</span><ins>+    void setException(Exception* exception)
+    {
+        m_exception = exception;
+        m_lastException = exception;
+    }
+
</ins><span class="cx">     Exception* exception() const { return m_exception; }
</span><span class="cx">     JSCell** addressOfException() { return reinterpret_cast&lt;JSCell**&gt;(&amp;m_exception); }
</span><span class="cx"> 
</span><ins>+    Exception* lastException() const { return m_lastException; }
+    JSCell** addressOfLastException() { return reinterpret_cast&lt;JSCell**&gt;(&amp;m_lastException); }
+
</ins><span class="cx">     JS_EXPORT_PRIVATE void throwException(ExecState*, Exception*);
</span><span class="cx">     JS_EXPORT_PRIVATE JSValue throwException(ExecState*, JSValue);
</span><span class="cx">     JS_EXPORT_PRIVATE JSObject* throwException(ExecState*, JSObject*);
</span><span class="lines">@@ -570,6 +579,7 @@
</span><span class="cx"> #endif
</span><span class="cx">     void* m_lastStackTop;
</span><span class="cx">     Exception* m_exception { nullptr };
</span><ins>+    Exception* m_lastException { nullptr };
</ins><span class="cx">     bool m_inDefineOwnProperty;
</span><span class="cx">     std::unique_ptr&lt;CodeCache&gt; m_codeCache;
</span><span class="cx">     LegacyProfiler* m_enabledProfiler;
</span></span></pre></div>
<a id="tagsSafari6011351SourceJavaScriptCoreruntimeVMEntryScopecpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VMEntryScope.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VMEntryScope.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/JavaScriptCore/runtime/VMEntryScope.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -49,6 +49,8 @@
</span><span class="cx">         // observe time xone changes.
</span><span class="cx">         vm.resetDateCache();
</span><span class="cx">     }
</span><ins>+
+    vm.clearLastException();
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void VMEntryScope::setEntryScopeDidPopListener(void* key, EntryScopeDidPopListener listener)
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebCore/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebCore/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebCore/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,38 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            API test added: WebKit1.ReportExceptionTest.
+
+            * bindings/js/JSDOMBinding.cpp:
+            (WebCore::reportException):
+            - Added a version of reportException() that takes a JSValue instead of an Exception
+              object.  This version will ensure that we have an Exception object before calling
+              into the original reportException() as follows:
+
+              1. If the JSValue is already an Exception object, we're good to go.
+
+              2. Else, if VM::lastException() is available, use that as the exception.
+                 This is how the old code use to behave (in terms of where it gets the exception
+                 stack trace).  The assumption is that reportException() will be called in
+                 a timely manner before the exception stack trace has been purged.
+
+              3. Else, create an Exception object with no stack trace.  This is the fall back
+                 in case the client did not call reportException() in a timely manner.
+
+            - Also clear the last exception after we've reported it.  This is how the old code
+              before r185259 behave (in terms of the lifecycle of the last exception stack
+              trace).  We're restoring that behavior here.
+
+            * bindings/js/JSDOMBinding.h:
+
</ins><span class="cx"> 2015-06-12  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Merge r185501. rdar://problem/21129111
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebCorebindingsjsJSDOMBindingcpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -139,6 +139,19 @@
</span><span class="cx">     return JSC::constructArray(exec, 0, globalObject, list);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void reportException(ExecState* exec, JSValue exceptionValue, CachedScript* cachedScript)
+{
+    RELEASE_ASSERT(exec-&gt;vm().currentThreadIsHoldingAPILock());
+    Exception* exception = jsDynamicCast&lt;Exception*&gt;(exceptionValue);
+    if (!exception) {
+        exception = exec-&gt;lastException();
+        if (!exception)
+            exception = Exception::create(exec-&gt;vm(), exceptionValue, Exception::DoNotCaptureStack);
+    }
+
+    reportException(exec, exception, cachedScript);
+}
+
</ins><span class="cx"> void reportException(ExecState* exec, Exception* exception, CachedScript* cachedScript)
</span><span class="cx"> {
</span><span class="cx">     RELEASE_ASSERT(exec-&gt;vm().currentThreadIsHoldingAPILock());
</span><span class="lines">@@ -149,6 +162,7 @@
</span><span class="cx"> 
</span><span class="cx">     RefPtr&lt;ScriptCallStack&gt; callStack(createScriptCallStackFromException(exec, exception, ScriptCallStack::maxCallStackSizeToCapture));
</span><span class="cx">     exec-&gt;clearException();
</span><ins>+    exec-&gt;clearLastException();
</ins><span class="cx"> 
</span><span class="cx">     JSDOMGlobalObject* globalObject = jsCast&lt;JSDOMGlobalObject*&gt;(exec-&gt;lexicalGlobalObject());
</span><span class="cx">     if (JSDOMWindow* window = jsDynamicCast&lt;JSDOMWindow*&gt;(globalObject)) {
</span><span class="lines">@@ -172,7 +186,11 @@
</span><span class="cx">         // FIXME: &lt;http://webkit.org/b/115087&gt; Web Inspector: WebCore::reportException should not evaluate JavaScript handling exceptions
</span><span class="cx">         // If this is a custon exception object, call toString on it to try and get a nice string representation for the exception.
</span><span class="cx">         errorMessage = exception-&gt;value().toString(exec)-&gt;value(exec);
</span><ins>+
+        // We need to clear any new exception that may be thrown in the toString() call above.
+        // reportException() is not supposed to be making new exceptions.
</ins><span class="cx">         exec-&gt;clearException();
</span><ins>+        exec-&gt;clearLastException();
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     ScriptExecutionContext* scriptExecutionContext = globalObject-&gt;scriptExecutionContext();
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebCorebindingsjsJSDOMBindingh"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.h (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.h        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebCore/bindings/js/JSDOMBinding.h        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -242,6 +242,7 @@
</span><span class="cx"> 
</span><span class="cx"> const JSC::HashTable&amp; getHashTableForGlobalData(JSC::VM&amp;, const JSC::HashTable&amp; staticTable);
</span><span class="cx"> 
</span><ins>+WEBCORE_EXPORT void reportException(JSC::ExecState*, JSC::JSValue exception, CachedScript* = nullptr);
</ins><span class="cx"> WEBCORE_EXPORT void reportException(JSC::ExecState*, JSC::Exception*, CachedScript* = nullptr);
</span><span class="cx"> void reportCurrentException(JSC::ExecState*);
</span><span class="cx"> 
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKitmacChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit/mac/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit/mac/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit/mac/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            * WebView/WebView.mm:
+            (+[WebView _reportException:inContext:]):
+            - Don't assume we have an Exception object.  Let WebCore::reportException() take
+              care of it.
+
</ins><span class="cx"> 2015-06-12  Babak Shafiei  &lt;bshafiei@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Custom patch to turn off ENABLE_PICTURE_SIZES. rdar://problem/21129111
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKitmacWebViewWebViewmm"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit/mac/WebView/WebView.mm (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit/mac/WebView/WebView.mm        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit/mac/WebView/WebView.mm        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -722,8 +722,7 @@
</span><span class="cx">     if (!toJSDOMWindow(execState-&gt;lexicalGlobalObject()))
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    Exception* vmException = Exception::cast(toJS(execState, exception));
-    reportException(execState, vmException);
</del><ins>+    reportException(execState, toJS(execState, exception));
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> static void WebKitInitializeApplicationCachePathIfNecessary()
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKitwinChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit/win/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit/win/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit/win/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            * WebView.cpp:
+            (WebView::reportException):
+            - Don't assume we have an Exception object.  Let WebCore::reportException() take
+              care of it.
+
</ins><span class="cx"> 2015-06-09  Hyungwook Lee  &lt;hyungwook.lee@navercorp.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Implement dumpProgressFinishedCallback() for Win layoutTestController.
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKitwinWebViewcpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit/win/WebView.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit/win/WebView.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit/win/WebView.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -6046,8 +6046,7 @@
</span><span class="cx">     if (!toJSDOMWindow(execState-&gt;lexicalGlobalObject()))
</span><span class="cx">         return E_FAIL;
</span><span class="cx"> 
</span><del>-    JSC::Exception* vmException = JSC::Exception::cast(toJS(execState, exception));
-    WebCore::reportException(execState, vmException);
</del><ins>+    WebCore::reportException(execState, toJS(execState, exception));
</ins><span class="cx">     return S_OK;
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit2/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit2/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit2/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            * WebProcess/InjectedBundle/InjectedBundle.cpp:
+            (WebKit::InjectedBundle::reportException):
+            - Don't assume we have an Exception object.  Let WebCore::reportException() take
+              care of it.
+
</ins><span class="cx"> 2015-06-12  Babak Shafiei  &lt;bshafiei@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Custom patch to turn off ENABLE_PICTURE_SIZES. rdar://problem/21129111
</span></span></pre></div>
<a id="tagsSafari6011351SourceWebKit2WebProcessInjectedBundleInjectedBundlecpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Source/WebKit2/WebProcess/InjectedBundle/InjectedBundle.cpp (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Source/WebKit2/WebProcess/InjectedBundle/InjectedBundle.cpp        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Source/WebKit2/WebProcess/InjectedBundle/InjectedBundle.cpp        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -523,7 +523,7 @@
</span><span class="cx">     if (!toJSDOMWindow(execState-&gt;lexicalGlobalObject()))
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    WebCore::reportException(execState, Exception::cast(toJS(execState, exception)));
</del><ins>+    WebCore::reportException(execState, toJS(execState, exception));
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void InjectedBundle::didCreatePage(WebPage* page)
</span></span></pre></div>
<a id="tagsSafari6011351ToolsChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Tools/ChangeLog (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Tools/ChangeLog        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Tools/ChangeLog        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -1,3 +1,21 @@
</span><ins>+2015-06-15  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
+        Merge r185487. rdar://problem/21277462
+
+    2015-06-11  Mark Lam  &lt;mark.lam@apple.com&gt;
+
+            WebCore::reportException() needs to be able to accept a raw thrown value in addition to Exception objects.
+            https://bugs.webkit.org/show_bug.cgi?id=145872
+
+            Reviewed by Michael Saboff.
+
+            * TestWebKitAPI/Tests/mac/WebViewDidCreateJavaScriptContext.mm:
+            (-[DidCreateJavaScriptContextFrameLoadDelegate webView:didCreateJavaScriptContext:forFrame:]):
+            - Exercises the JSC ObjC API to call a function which throws an exception.  That
+              exception will be returned as a JSValue instead of an Exception object.  We
+              will use this JSValue to test WebCore::reportException() to confirm that it is
+              able to handle an exception value which is not an Exception object.
+
</ins><span class="cx"> 2015-06-11  Daniel Bates  &lt;dabates@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         [iOS] Cannot run run-webkit-tests with public SDK; LayoutTestRelay fails to build
</span></span></pre></div>
<a id="tagsSafari6011351ToolsTestWebKitAPITestsmacWebViewDidCreateJavaScriptContextmm"></a>
<div class="modfile"><h4>Modified: tags/Safari-601.1.35.1/Tools/TestWebKitAPI/Tests/mac/WebViewDidCreateJavaScriptContext.mm (185563 => 185564)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-601.1.35.1/Tools/TestWebKitAPI/Tests/mac/WebViewDidCreateJavaScriptContext.mm        2015-06-15 19:29:06 UTC (rev 185563)
+++ tags/Safari-601.1.35.1/Tools/TestWebKitAPI/Tests/mac/WebViewDidCreateJavaScriptContext.mm        2015-06-15 19:36:44 UTC (rev 185564)
</span><span class="lines">@@ -28,6 +28,7 @@
</span><span class="cx"> #import &lt;JavaScriptCore/JSExport.h&gt;
</span><span class="cx"> #import &lt;JavaScriptCore/JSContext.h&gt;
</span><span class="cx"> #import &lt;WebKit/WebFrameLoadDelegatePrivate.h&gt;
</span><ins>+#import &lt;WebKit/WebViewPrivate.h&gt;
</ins><span class="cx"> #import &lt;wtf/RetainPtr.h&gt;
</span><span class="cx"> 
</span><span class="cx"> #if JSC_OBJC_API_ENABLED
</span><span class="lines">@@ -39,6 +40,7 @@
</span><span class="cx"> static bool didCallWindowCallback = false;
</span><span class="cx"> static bool didFindMyCustomProperty = false;
</span><span class="cx"> static bool didInsertMyCustomProperty = true;
</span><ins>+static bool didReportException = false;
</ins><span class="cx"> 
</span><span class="cx"> @protocol MyConsole&lt;JSExport&gt;
</span><span class="cx"> - (void)log:(NSString *)s;
</span><span class="lines">@@ -107,6 +109,27 @@
</span><span class="cx">         [element setValue:fortyTwo forProperty:@&quot;myCustomProperty&quot;];
</span><span class="cx">         didInsertMyCustomProperty = true;
</span><span class="cx">     };
</span><ins>+
+    context[@&quot;testReportException&quot;] = ^{
+        JSContext* context = [JSContext currentContext];
+        [context evaluateScript:@&quot;function doThrow() { throw 'TestError'; }&quot;];
+
+        JSGlobalContextRef globalContext = [context JSGlobalContextRef];
+        JSObjectRef globalObject = JSContextGetGlobalObject(globalContext);
+
+        JSStringRef jsString = JSStringCreateWithUTF8CString(&quot;doThrow&quot;);
+        JSValueRef function = JSObjectGetProperty(globalContext, globalObject, jsString, nullptr);
+        JSStringRelease(jsString);
+
+        const JSValueRef arguments[] = { };
+
+        JSValueRef exception = 0;
+        JSObjectCallAsFunction(globalContext, (JSObjectRef)function, globalObject, 0, arguments, &amp;exception);
+        if (exception) {
+            [WebView _reportException:exception inContext:globalContext];
+            didReportException = true;
+        }
+    };
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> @end
</span><span class="lines">@@ -283,6 +306,29 @@
</span><span class="cx">     }
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+TEST(WebKit1, ReportExceptionTest)
+{
+    didReportException = false;
+    @autoreleasepool {
+        RetainPtr&lt;WebView&gt; webView = adoptNS([[WebView alloc] initWithFrame:NSMakeRect(0, 0, 120, 200) frameName:nil groupName:nil]);
+        RetainPtr&lt;DidCreateJavaScriptContextFrameLoadDelegate&gt; frameLoadDelegate = adoptNS([[DidCreateJavaScriptContextFrameLoadDelegate alloc] init]);
+        
+        webView.get().frameLoadDelegate = frameLoadDelegate.get();
+        WebFrame *mainFrame = webView.get().mainFrame;
+        
+        NSString *bodyString =
+            @&quot;&lt;body&gt; \
+                &lt;script&gt; \
+                    testReportException(); \
+                &lt;/script&gt; \
+            &lt;/body&gt;&quot;;
+        NSURL *aboutBlankURL = [NSURL URLWithString:@&quot;about:blank&quot;];
+        
+        [mainFrame loadHTMLString:bodyString baseURL:aboutBlankURL];
+        Util::run(&amp;didReportException);
+    }
+}
+
</ins><span class="cx"> } // namespace TestWebKitAPI
</span><span class="cx"> 
</span><span class="cx"> #endif // ENABLE(JSC_OBJC_API)
</span></span></pre>
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