zig

commit 87d5db057b53fc643ac0c316653a46ada54b3c91 (tree)
parent 92b69215e63a3303a5e904ab332e2eec236e0ed2
Author: Andrew Kelley <andrew@ziglang.org>
Date:   Wed, 18 Aug 2021 15:27:00 -0700

update libcxx to latest llvm release/13.x

rc1 + 98feb20df14e6cf9ce77f097ceb8dd188c9070a7

Diffstat:
M
lib/libcxx/include/__config
 | 
11
+++++++++++
M
lib/libcxx/include/ctime
 | 
2
+-

2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/lib/libcxx/include/__config b/lib/libcxx/include/__config
@@ -352,6 +352,16 @@
 #  define _LIBCPP_NO_CFI
 #endif
 
+// If the compiler supports using_if_exists, pretend we have those functions and they'll
+// be picked up if the C library provides them.
+//
+// TODO: Once we drop support for Clang 12, we can assume the compiler supports using_if_exists
+//       for platforms that don't have a conforming C11 library, so we can drop this whole thing.
+#if __has_attribute(using_if_exists)
+# define _LIBCPP_HAS_TIMESPEC_GET
+# define _LIBCPP_HAS_QUICK_EXIT
+# define _LIBCPP_HAS_ALIGNED_ALLOC
+#else
 #if (defined(__ISO_C_VISIBLE) && (__ISO_C_VISIBLE >= 2011)) || __cplusplus >= 201103L
 #  if defined(__FreeBSD__)
 #    define _LIBCPP_HAS_ALIGNED_ALLOC
@@ -406,6 +416,7 @@
 #    endif
 #  endif // __APPLE__
 #endif
+#endif // __has_attribute(using_if_exists)
 
 #ifndef _LIBCPP_CXX03_LANG
 # define _LIBCPP_ALIGNOF(_Tp) alignof(_Tp)
diff --git a/lib/libcxx/include/ctime b/lib/libcxx/include/ctime
@@ -59,7 +59,7 @@ int timespec_get( struct timespec *ts, int base); // C++17
 // we're detecting this here instead of in <__config> because we can't include
 // system headers from <__config>, since it leads to circular module dependencies.
 // This is also meant to be a very temporary workaround until the SDKs are fixed.
-#if defined(__APPLE__)
+#if defined(__APPLE__) && !__has_attribute(using_if_exists)
 #   include <sys/cdefs.h>
 #   if defined(_LIBCPP_HAS_TIMESPEC_GET) && (__DARWIN_C_LEVEL < __DARWIN_C_FULL)
 #       define _LIBCPP_HAS_TIMESPEC_GET_NOT_ACTUALLY_PROVIDED