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907c1196a7
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
47 lines
1.0 KiB
C++
47 lines
1.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// XFAIL: with_system_cxx_lib=macosx10.11
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// XFAIL: with_system_cxx_lib=macosx10.10
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// XFAIL: with_system_cxx_lib=macosx10.9
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// XFAIL: with_system_cxx_lib=macosx10.8
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// XFAIL: with_system_cxx_lib=macosx10.7
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// <random>
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// class random_device;
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// result_type operator()();
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#include <random>
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#include <cassert>
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#include "test_macros.h"
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int main()
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{
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{
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std::random_device r;
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std::random_device::result_type e = r();
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((void)e); // Prevent unused warning
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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try
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{
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std::random_device r("/dev/null");
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r();
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LIBCPP_ASSERT(false);
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}
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catch (const std::system_error&)
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{
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}
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#endif
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}
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