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Add markup for libc++ dylib availability
Libc++ is used as a system library on macOS and iOS (amongst others). In order for users to be able to compile a binary that is intended to be deployed to an older version of the platform, clang provides the availability attribute <https://clang.llvm.org/docs/AttributeReference.html#availability>_ that can be placed on declarations to describe the lifecycle of a symbol in the library. See docs/DesignDocs/AvailabilityMarkup.rst for more information. Differential Revision: https://reviews.llvm.org/D31739 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302172 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -12,6 +12,9 @@
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// MODULES_DEFINES: _LIBCPP_DEBUG=1
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// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
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// Can't test the system lib because this test enables debug mode
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// UNSUPPORTED: with_system_cxx_lib
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// test container debugging
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#define _LIBCPP_DEBUG 1
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