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46a0c2ef0c
In the C++ standard `std::pointer_safety` is defined as a C++11 strongly typed enum. However libc++ currently defines it as a class type which simulates a C++11 enumeration. This can be detected in valid C++ code. This patch introduces an the _LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE ABI option. When defined `std::pointer_safety` is implemented as an enum type. Unfortunatly this also means it can no longer be provided as an extension in C++03. Additionally this patch moves the definition for `get_pointer_safety()` out of the dylib, and into the headers. New usages of `get_pointer_safety()` will now use the inline version instead of the dylib version. However in order to keep the dylib ABI compatible the old definition is explicitly compiled into it. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291046 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
693 B
C++
26 lines
693 B
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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// <memory>
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// pointer_safety get_pointer_safety();
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// UNSUPPORTED: c++98, c++03
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#include <memory>
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#include <cassert>
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int main()
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{
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std::pointer_safety r = std::get_pointer_safety();
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assert(r == std::pointer_safety::relaxed ||
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r == std::pointer_safety::preferred ||
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r == std::pointer_safety::strict);
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}
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