Fix compiler errors.

On Mavericks with Apple's Clang 5.0 (3.3 based):
../3rdparty/javascriptcore/JavaScriptCore/runtime/Structure.h:320:117: error: non-const reference cannot bind to bit-field 'm_attributesInPrevious'
  ...add(StructureTransitionTableHash::Key(RefPtr<UString::Rep>(existingTransition->m_nameInPrevious.get()), existingTransition->m_attributesInPrevious), exi...
                                                                                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

C++11 specific:
../3rdparty/javascriptcore/JavaScriptCore/bytecompiler/BytecodeGenerator.h:179:35: error: non-constant-expression cannot be narrowed from type 'size_t'
      (aka 'unsigned long') to 'uint32_t' (aka 'unsigned int') in initializer list [-Wc++11-narrowing]
                LineInfo info = { instructions().size(), n->lineNo() };
                                  ^~~~~~~~~~~~~~~~~~~~~

Both occur in multiple places.

Task-number: QTBUG-34842

Change-Id: I98a29b51718a6e0db8749ac1b495e071e9fe479d
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

src/3rdparty/javascriptcore/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp

@@ -1837,7 +1837,12 @@ RegisterID* BytecodeGenerator::emitCatch(RegisterID* targetRegister, Label* star
 #if ENABLE(JIT)
     HandlerInfo info = { start->bind(0, 0), end->bind(0, 0), instructions().size(), m_dynamicScopeDepth + m_baseScopeDepth, CodeLocationLabel() };
 #else
-    HandlerInfo info = { start->bind(0, 0), end->bind(0, 0), instructions().size(), m_dynamicScopeDepth + m_baseScopeDepth };
+    HandlerInfo info = {
+        static_cast<uint32_t>(start->bind(0, 0)),
+        static_cast<uint32_t>(end->bind(0, 0)),
+        static_cast<uint32_t>(instructions().size()),
+        static_cast<uint32_t>(m_dynamicScopeDepth + m_baseScopeDepth)
+    };
 #endif
 
     m_codeBlock->addExceptionHandler(info);
@@ -1889,7 +1894,7 @@ void BytecodeGenerator::emitPushNewScope(RegisterID* dst, const Identifier& prop
 
 void BytecodeGenerator::beginSwitch(RegisterID* scrutineeRegister, SwitchInfo::SwitchType type)
 {
-    SwitchInfo info = { instructions().size(), type };
+    SwitchInfo info = { static_cast<uint32_t>(instructions().size()), type };
     switch (type) {
         case SwitchInfo::SwitchImmediate:
             emitOpcode(op_switch_imm);

src/3rdparty/javascriptcore/JavaScriptCore/bytecompiler/BytecodeGenerator.h

@@ -176,7 +176,7 @@ namespace JSC {
             // Node::emitCode assumes that dst, if provided, is either a local or a referenced temporary.
             ASSERT(!dst || dst == ignoredResult() || !dst->isTemporary() || dst->refCount());
             if (!m_codeBlock->numberOfLineInfos() || m_codeBlock->lastLineInfo().lineNumber != n->lineNo()) {
-                LineInfo info = { instructions().size(), n->lineNo() };
+                LineInfo info = { static_cast<uint32_t>(instructions().size()), n->lineNo() };
                 m_codeBlock->addLineInfo(info);
             }
             if (m_emitNodeDepth >= s_maxEmitNodeDepth)
@@ -195,7 +195,7 @@ namespace JSC {
         void emitNodeInConditionContext(ExpressionNode* n, Label* trueTarget, Label* falseTarget, bool fallThroughMeansTrue)
         {
             if (!m_codeBlock->numberOfLineInfos() || m_codeBlock->lastLineInfo().lineNumber != n->lineNo()) {
-                LineInfo info = { instructions().size(), n->lineNo() };
+                LineInfo info = { static_cast<uint32_t>(instructions().size()), n->lineNo() };
                 m_codeBlock->addLineInfo(info);
             }
             if (m_emitNodeDepth >= s_maxEmitNodeDepth)

src/3rdparty/javascriptcore/JavaScriptCore/runtime/Identifier.cpp

@@ -195,7 +195,7 @@ PassRefPtr<UString::Rep> Identifier::add(JSGlobalData* globalData, const UChar*
         UString::Rep::empty().hash();
         return &UString::Rep::empty();
     }
-    UCharBuffer buf = {s, length}; 
+    UCharBuffer buf = {s, static_cast<unsigned>(length)};
     pair<HashSet<UString::Rep*>::iterator, bool> addResult = globalData->identifierTable->add<UCharBuffer, UCharBufferTranslator>(buf);
 
     // If the string is newly-translated, then we need to adopt it.

src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSONObject.cpp

@@ -320,7 +320,11 @@ void Stringifier::appendQuotedString(StringBuilder& builder, const UString& valu
             default:
                 static const char hexDigits[] = "0123456789abcdef";
                 UChar ch = data[i];
-                UChar hex[] = { '\\', 'u', hexDigits[(ch >> 12) & 0xF], hexDigits[(ch >> 8) & 0xF], hexDigits[(ch >> 4) & 0xF], hexDigits[ch & 0xF] };
+                UChar hex[] = { '\\', 'u',
+                                static_cast<UChar>(hexDigits[(ch >> 12) & 0xF]),
+                                static_cast<UChar>(hexDigits[(ch >> 8) & 0xF]),
+                                static_cast<UChar>(hexDigits[(ch >> 4) & 0xF]),
+                                static_cast<UChar>(hexDigits[ch & 0xF]) };
                 builder.append(hex, sizeof(hex) / sizeof(UChar));
                 break;
         }

src/3rdparty/javascriptcore/JavaScriptCore/runtime/Structure.cpp

@@ -156,9 +156,10 @@ Structure::Structure(JSValue prototype, const TypeInfo& typeInfo)
 Structure::~Structure()
 {
     if (m_previous) {
-        if (m_nameInPrevious)
-            m_previous->table.remove(StructureTransitionTableHash::Key(RefPtr<UString::Rep>(m_nameInPrevious.get()), m_attributesInPrevious), m_specificValueInPrevious);
-        else
+        if (m_nameInPrevious) {
+            unsigned attrInPrev = m_attributesInPrevious;
+            m_previous->table.remove(StructureTransitionTableHash::Key(RefPtr<UString::Rep>(m_nameInPrevious.get()), attrInPrev), m_specificValueInPrevious);
+        } else
             m_previous->table.removeAnonymousSlotTransition(m_anonymousSlotsInPrevious);
 
     }

src/3rdparty/javascriptcore/JavaScriptCore/runtime/Structure.h

@@ -316,8 +316,10 @@ namespace JSC {
         Structure* existingTransition = singleTransition();
         TransitionTable* transitionTable = new TransitionTable;
         setTransitionTable(transitionTable);
-        if (existingTransition)
-            add(StructureTransitionTableHash::Key(RefPtr<UString::Rep>(existingTransition->m_nameInPrevious.get()), existingTransition->m_attributesInPrevious), existingTransition, existingTransition->m_specificValueInPrevious);
+        if (existingTransition) {
+            const unsigned attrsInPrev = existingTransition->m_attributesInPrevious;
+            add(StructureTransitionTableHash::Key(RefPtr<UString::Rep>(existingTransition->m_nameInPrevious.get()), attrsInPrev), existingTransition, existingTransition->m_specificValueInPrevious);
+        }
     }
 } // namespace JSC
 

src/3rdparty/javascriptcore/JavaScriptCore/wtf/unicode/UTF8.cpp

@@ -229,7 +229,7 @@ static bool isLegalUTF8(const unsigned char* source, int length)
 // This table contains as many values as there might be trailing bytes
 // in a UTF-8 sequence.
 static const UChar32 offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL, 
-            0x03C82080UL, 0xFA082080UL, 0x82082080UL };
+            0x03C82080UL, static_cast<UChar32>(0xFA082080UL), static_cast<UChar32>(0x82082080UL) };
 
 ConversionResult convertUTF8ToUTF16(
     const char** sourceStart, const char* sourceEnd,