Import libc++ trunk r165949. Among other improvements and bug fixes,

this has many visibility problems fixed, which should help with
compiling certain ports that exercise C++11 mode (i.e. Firefox).

Also, belatedly add the LICENSE.TXT and accompanying CREDITS.TXT files,
which are referred to in all the source files.

MFC after:	1 month

1 files changed, 28 insertions, 12 deletions

diff --git a/contrib/libc++/include/__config b/contrib/libc++/include/__config
index 7cd01dc..75b2206 100644
--- a/contrib/libc++/include/__config
+++ b/contrib/libc++/include/__config
@@ -15,7 +15,11 @@
 #pragma GCC system_header
 #endif
 
-#define _LIBCPP_VERSION 1001
+#ifdef __GNUC__
+#define _GNUC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
+#endif
+
+#define _LIBCPP_VERSION 1101
 
 #define _LIBCPP_ABI_VERSION 1
 
@@ -53,7 +57,8 @@
 #  define _LIBCPP_LITTLE_ENDIAN 1
 #  define _LIBCPP_BIG_ENDIAN    0
 // Compiler intrinsics (GCC or MSVC)
-#  if (defined(_MSC_VER) && _MSC_VER >= 1400) || (__GNUC__ >= 4 && __GNUC_MINOR__ > 3)
+#  if (defined(_MSC_VER) && _MSC_VER >= 1400) \
+   || (defined(__GNUC__) && _GNUC_VER > 403)
 #    define _LIBCP_HAS_IS_BASE_OF
 #  endif
 #endif  // _WIN32
@@ -145,8 +150,10 @@
 #if defined(__clang__)
 
 #if __has_feature(cxx_alignas)
+#  define _ALIGNAS_TYPE(x) alignas(x)
 #  define _ALIGNAS(x) alignas(x)
 #else
+#  define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
 #  define _ALIGNAS(x) __attribute__((__aligned__(x)))
 #endif
 
@@ -180,9 +187,9 @@ typedef __char32_t char32_t;
 #endif
 
 #if __has_feature(cxx_attributes)
-#  define _ATTRIBUTE(x) [[x]]
+#  define _LIBCPP_NORETURN [[noreturn]]
 #else
-#  define _ATTRIBUTE(x) __attribute__ ((x))
+#  define _LIBCPP_NORETURN __attribute__ ((noreturn))
 #endif
 
 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
@@ -245,8 +252,9 @@ typedef __char32_t char32_t;
 #define _LIBCPP_HAS_NO_CONSTEXPR
 #endif
 
-#if __FreeBSD__
+#if __FreeBSD__ && (__ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L)
 #define _LIBCPP_HAS_QUICK_EXIT
+#define _LIBCPP_HAS_C11_FEATURES
 #endif
 
 #if (__has_feature(cxx_noexcept))
@@ -274,8 +282,9 @@ namespace std {
 #elif defined(__GNUC__)
 
 #define _ALIGNAS(x) __attribute__((__aligned__(x)))
+#define _ALIGNAS_TYPE(x) __attribute__((__aligned__(__alignof(x))))
 
-#define _ATTRIBUTE(x) __attribute__((x))
+#define _LIBCPP_NORETURN __attribute__((noreturn))
 
 #if !__EXCEPTIONS
 #define _LIBCPP_NO_EXCEPTIONS
@@ -305,15 +314,15 @@ namespace std {
 #define _LIBCPP_HAS_NO_TRAILING_RETURN
 #define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
 
-#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
+#if _GNUC_VER < 403
 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
 #endif
 
-#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
+#if _GNUC_VER < 403
 #define _LIBCPP_HAS_NO_STATIC_ASSERT
 #endif
 
-#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
+#if _GNUC_VER < 404
 #define _LIBCPP_HAS_NO_ADVANCED_SFINAE
 #define _LIBCPP_HAS_NO_DECLTYPE
 #define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
@@ -321,9 +330,9 @@ namespace std {
 #define _LIBCPP_HAS_NO_UNICODE_CHARS
 #define _LIBCPP_HAS_NO_VARIADICS
 #define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
-#endif  // !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
+#endif  // _GNUC_VER < 404
 
-#if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)
+#if _GNUC_VER < 406
 #define _LIBCPP_HAS_NO_NULLPTR
 #endif
 
@@ -347,7 +356,7 @@ using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
 #define _LIBCPP_HAS_NO_UNICODE_CHARS
 #define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
 #define __alignof__ __alignof
-#define _ATTRIBUTE __declspec
+#define _LIBCPP_NORETURN __declspec(noreturn)
 #define _ALIGNAS(x) __declspec(align(x))
 #define _LIBCPP_HAS_NO_VARIADICS
 
@@ -389,6 +398,12 @@ template <unsigned> struct __static_assert_check {};
 #define _LIBCPP_CONSTEXPR constexpr
 #endif
 
+#ifdef __GNUC__
+#define _NOALIAS __attribute__((malloc))
+#else
+#define _NOALIAS
+#endif
+
 #ifndef __has_feature
 #define __has_feature(__x) 0
 #endif
@@ -404,6 +419,7 @@ template <unsigned> struct __static_assert_check {};
 #define _LIBCPP_DECLARE_STRONG_ENUM_EPILOG(x) \
     _ __v_; \
     _LIBCPP_ALWAYS_INLINE x(_ __v) : __v_(__v) {} \
+    _LIBCPP_ALWAYS_INLINE explicit x(int __v) : __v_(static_cast<_>(__v)) {} \
     _LIBCPP_ALWAYS_INLINE operator int() const {return __v_;} \
     };
 #else  // _LIBCPP_HAS_NO_STRONG_ENUMS