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78f5dc09ca
Summary: This patch implements exception_ptr on Windows using the `__ExceptionPtrFoo` functions provided by MSVC. The `__ExceptionPtrFoo` functions are defined inside the C++ standard library, `msvcprt`, which is unfortunate because it requires libc++ to link to the MSVC STL. However this doesn't seem to cause any immediate problems. However to be safe I kept all usages within the libc++ dylib so that user programs wouldn't have to link to MSVCPRT as well. Note there are still 2 outstanding exception_ptr/nested_exception test failures. * `current_exception.pass.cpp` needs to be rewritten for the Windows exception_ptr semantics which copy the exception every time. * `rethrow_if_nested.pass.cpp` need investigation. It hits a stack overflow, likely from recursion. This patch also gets most of the `<future>` tests passing as well. Reviewers: mclow.lists, compnerd, bcraig, rmaprath, majnemer, BillyONeal, STL_MSFT Subscribers: mgorny, cfe-commits Differential Revision: https://reviews.llvm.org/D32927 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302393 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
852 B
C++
35 lines
852 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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// <exception>
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// typedef unspecified exception_ptr;
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// exception_ptr shall satisfy the requirements of NullablePointer.
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#include <exception>
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#include <cassert>
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int main()
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{
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std::exception_ptr p;
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assert(p == nullptr);
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std::exception_ptr p2 = p;
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assert(nullptr == p);
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assert(!p);
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assert(p2 == p);
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p2 = p;
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assert(p2 == p);
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assert(p2 == nullptr);
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std::exception_ptr p3 = nullptr;
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assert(p3 == nullptr);
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p3 = nullptr;
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assert(p3 == nullptr);
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}
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