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authorAlexander Smirnov <alex@ydb.tech>2024-11-20 11:14:58 +0000
committerAlexander Smirnov <alex@ydb.tech>2024-11-20 11:14:58 +0000
commit31773f157bf8164364649b5f470f52dece0a4317 (patch)
tree33d0f7eef45303ab68cf08ab381ce5e5e36c5240 /contrib/libs/cxxsupp/libcxx/include/__availability
parent2c7938962d8689e175574fc1e817c05049f27905 (diff)
parenteff600952d5dfe17942f38f510a8ac2b203bb3a5 (diff)
downloadydb-31773f157bf8164364649b5f470f52dece0a4317.tar.gz
Merge branch 'rightlib' into mergelibs-241120-1113
Diffstat (limited to 'contrib/libs/cxxsupp/libcxx/include/__availability')
-rw-r--r--contrib/libs/cxxsupp/libcxx/include/__availability17
1 files changed, 17 insertions, 0 deletions
diff --git a/contrib/libs/cxxsupp/libcxx/include/__availability b/contrib/libs/cxxsupp/libcxx/include/__availability
index 579698ec1e..a6367945ed 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__availability
+++ b/contrib/libs/cxxsupp/libcxx/include/__availability
@@ -179,6 +179,17 @@
// # define _LIBCPP_AVAILABILITY_HAS_NO_TZDB
# define _LIBCPP_AVAILABILITY_TZDB
+// Enable additional explicit instantiations of iostreams components. This
+// reduces the number of weak definitions generated in programs that use
+// iostreams by providing a single strong definition in the shared library.
+//
+// TODO: Enable additional explicit instantiations on GCC once it supports exclude_from_explicit_instantiation,
+// or once libc++ doesn't use the attribute anymore.
+// TODO: Enable them on Windows once https://llvm.org/PR41018 has been fixed.
+#if defined(_LIBCPP_COMPILER_GCC) || defined(_WIN32)
+# define _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
+#endif
+
#elif defined(__APPLE__)
// shared_mutex and shared_timed_mutex
@@ -356,6 +367,12 @@
# define _LIBCPP_AVAILABILITY_HAS_NO_TZDB
# define _LIBCPP_AVAILABILITY_TZDB __attribute__((unavailable))
+# if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 120000) || \
+ (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 150000) || \
+ (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 150000) || \
+ (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 80000)
+# define _LIBCPP_AVAILABILITY_HAS_NO_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1
+# endif
#else
// ...New vendors can add availability markup here...