C++11编译器说明.docxVIP

主流编译器对C++11的支持现状比较摘要：C++11标准正式发布已有一段时日，但想要真正普及还需要编译器的支持，那各主流C++编译器对其支持实现得如何？本文比较了GCC 4.8、Clang 3.3、Visual Studio 2012以及Intel C++编译器V.13.0，值得C++开发者们留意。GCC 4.8刚刚发布，Clang 3.3也发布在即，如果你使用Visual Studio 2012，也可以通过安装一个实验性的CTP更新（VS2012?Nov CTP）来获取额外的C++11支持；除此之外，这里还比较了Intel C++编译器v.13.0，不过这仍然是一个预览版。特性VS2012Nov CTPg++ 4.8Clang 3.3Intel 13.0autoYesYesYesYesdecltypeYesYesYesYesRvalue references and move semanticsYesYesYesYesLambda expressionsYesYesYesYesnullptrYesYesYesYesstatic_assertYesYesYesYesRange based for loopYesYesYesYesTrailing return type in functionsYesYesYesYesextern templatesYesYesYesYes for nested templatesYesYesYesYesLocal and unnamed types as template argumentsYesYesYesYesVariadic macrosYesYesYesYesVariadic templatesYesYesYesYesDefault template arguments in function templatesYesYesYesYesfinal method keywordYesYesYesNooverride method keywordYesYesYesNoStrongly typed enumsYesYesYesPartialForward declared enumsYesYesYesPartialInitializer listsYesYesYesPartialexplicit type conversion operatorsYesYesYesNoRaw string literalsYesYesYesNoForwarding constructorsYesYesYesNoTemplate aliasesNoYesYesYesDefaulted methodsNoYesYesYesDeleted methodsNoYesYesYesNew built-in typesPartialYesYesPartialAlignment supportPartialYesYesNoInline namespacesNoYesYesNosizeof on non-static data members without an instanceNoYesYesNoChanged restrictions on union membersNoYesYesNoUser defined literalsNoYesYesNoEncoding support in literalsNoYesYesNoArbitrary expressions in template deduction contextsNoYesYesDon’t knowNon-static data member initializersNoYesYesDon’t knownoexceptNoYesYesPartialconstexprNoYesYesPartialC99 compatibilityPartialYesPartialYesGeneralized attributesNoYesPartialYesThread local storagePartialYesNoPartialInheriting constructorsNoYesNoNoRvalue references for *thisNoNoYesNoMinimal support for garbage collectionYesNoNoDon’t know从表格数据我们可以看到，GCC正在取代Clang成为C++11支持最佳的编译器，而Visual Studio在对C++11特性的支持上也有明显的改进，特别是新增对variadic templates、 initializer lists以及raw literals的支持。当然这些支持中那些属于完全支持,哪些