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Introduce _LIBCPP_DEPRECATED_ABI_EXTERNAL_ERROR_CATEGORY_CONSTRUCTOR ABI option.

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Currently libc++ compiles a special version of error_category()
into the dylib. This definition is no longer needed, and doesn't
work on Windows due to dllimport/dllexport semantics.

For those reasons this patch introduces an option to
disable/enable this definition. By default the definition
is provided in ABI v1 except on windows. This patch
also addresses D28210.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@290840 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2017-01-02 22:17:51 +00:00
parent ea38cde827
commit 4b07f98816
3 changed files with 8 additions and 1 deletions
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2
src/system_error.cpp
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@@ -29,9 +29,11 @@ _LIBCPP_BEGIN_NAMESPACE_STD
// class error_category
#if defined(_LIBCPP_DEPRECATED_ABI_EXTERNAL_ERROR_CATEGORY_CONSTRUCTOR)
error_category::error_category() _NOEXCEPT
{
}
#endif
error_category::~error_category() _NOEXCEPT
{