更多编译器对C++11的支持比较

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上次对各编译器对C++11的支持比较之后，很多观众提议加入Intel C++ Compiler（ICC）和Clang。这次修订还加入了在VC11 Nov 12 CTP中对C++11的提升。上回表中的Yes/No标识也被我改成了写明支持一个feature的最低版本号，feature的顺序也调整了一下。为了方便查询，还加入了Proposal的链接。

C++11 Core Language Features

Language Feature	Proposal	MSVC	GCC	ICC	Clang	替代方案
Rvalue references	N2118	10.0	4.3	12.0	2.9	Boost.Move
Rvalue references for *this	N2439	No	No	No	2.9
Initialization of class objects by rvalues	N1610	9.0	4.3	11.1	2.9
Non-static data member initializers	N2756	No	4.7	No	3.0
Variadic templates	N2242	Nov 12	4.3	12.1	2.9
Extending variadic template template parameters	N2555	Nov 12	4.4	No	2.9
Initializer lists	N2672	Nov 12	4.4	No	3.1
Static assertions	N1720	10.0	4.3	11.1	2.9	Boost.StaticAssert
auto-typed variables	N1984	10.0	4.4	12.0	2.9	Boost.Typeof
Multi-declarator auto	N1737	10.0	4.4	12.0	2.9	Boost.Typeof
Removal of auto as a storage-class specifier	N2546	10.0	4.4	12.0	2.9	Boost.Typeof
New function declarator syntax	N2541	10.0	4.4	12.0	2.9	Boost.ReturnType
New wording for C++11 lambdas	N2927	10.0	4.5	12.0	3.1	Boost.Lambda
Declared type of an expression	N2343	10.0	4.3	12.0	2.9	Boost.Typeof
Incomplete return types	N3276	11.0	No	12.1	3.1
Right angle brackets	N1757	9.0	4.3	11.1	2.9	TR1
Default template arguments for function templates	DR226	Nov 12	4.3	12.1	2.9
Solving the SFINAE problem for expressions	DR339	No	4.4	12.1	2.9
Template aliases	N2258	No	4.7	12.1	3.0
Extern templates	N1987	9.0	4.3	11.1	2.9
Null pointer constant	N2431	10.0	4.6	12.1	3.0	自己实现的null_ptr
Strongly-typed enums	N2347	11.0	4.4	No	2.9	#define
Forward declarations for enums	N2764	11.0	4.6	No	3.1
Generalized attributes	N2761	No	4.8	12.1	No
Generalized constant expressions	N2235	No	4.6	No	3.1
Alignment support	N2341	No	4.8	No	3.0
Delegating constructors	N1986	Nov 12	4.7	No	3.0
Inheriting constructors	N2540	No	4.8	No	No
Explicit conversion operators	N2437	Nov 12	4.5	No	3.0
New character types	N2249	No	4.4	No	2.9
Unicode string literals	N2442	No	4.5	No	3.0
Raw string literals	N2442	Nov 12	4.5	No	3.0
Universal character name literals	N2170	No	4.5	No	3.1
User-defined literals	N2765	No	4.7	No	3.1
Standard Layout Types	N2342	11.0	4.5	No	3.0
Defaulted and deleted functions	N2346	No	4.4	12.0	3.0
Extended friend declarations	N1791	10.0	4.7	12.0	2.9
Extending sizeof	N2253	No	4.4	No	3.1
Inline namespaces	N2535	No	4.4	No	2.9
Unrestricted unions	N2544	No	4.6	No	3.1
Local and unnamed types as template arguments	N2657	9.0	4.5	12.0	2.9
Range-based for	N2930	11.0	4.6	13.0	3.0	Boost.Foreach
Explicit virtual overrides	N2928	11.0	4.7	No	3.0	#define
Minimal support for garbage collection and reachability-based leak detection	N2670	10.0	No	No	No
Allowing move constructors to throw [noexcept]	N3050	No	4.6	No	3.0
Defining move special member functions	N3053	No	4.6	No	3.0

C++11 Core Language Features: Concurrency

Language Feature	Proposal	MSVC	GCC	ICC	Clang	替代方案
Sequence points	N2239	No	No	No	No
Atomic operations	N2427	11.0	4.4	13.0	3.1	Boost.Atomic
Strong Compare and Exchange	N2748	11.0	No	No	3.1
Bidirectional Fences	N2752	11.0	No	No	3.1
Memory model	N2429	No	No	No	No
Data-dependency ordering: atomics and memory model	N2664	11.0	No	No	No
Propagating exceptions	N2179	10.0	4.4	12.0	2.9	Boost.Exception
Abandoning a process and at_quick_exit	N2440	No	No	No	No
Allow atomics use in signal handlers	N2547	No	No	No	3.1
Thread-local storage	N2659	No	4.8	No	No	Boost.Thread
Dynamic initialization and destruction with concurrency	N2660	No	No	No	No

C++11 Core Language Features: C99

Language Feature	Proposal	MSVC	GCC	ICC	Clang	替代方案
__func__ predefined identifier	N2340	No	4.3	11.1	2.9	__FUNCTION__
C99 preprocessor	N1653	No	4.3	11.1	2.9
long long	N1811	9.0	4.3	11.1	2.9	__int64
Extended integral types	N1988	No	No	No	No

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