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LWG 2969 "polymorphic_allocator::construct() shouldn't pass resource()"

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Patch from Arthur O'Dwyer.

In the TS, `uses_allocator` construction for `pair` tried to use an allocator
type of `memory_resource*`, which is incorrect because `memory_resource*` is
not an allocator type. LWG 2969 fixed it to use `polymorphic_allocator` as the
allocator type instead.

https://wg21.link/lwg2969

(D47090 included this in `<memory_resource>`; at Eric's request, I've split
this out into its own patch applied to the existing
`<experimental/memory_resource>` instead.)

Reviewed as https://reviews.llvm.org/D47109


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@333384 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2018-05-29 00:08:47 +00:00
parent d1e11a1a6f
commit 40a29e79c2
9 changed files with 318 additions and 35 deletions
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2
test/support/test_memory_resource.hpp
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@@ -28,7 +28,7 @@
// because it can't include <experimental/memory_resource>
template <>
struct TransformErasedTypeAlloc<std::experimental::erased_type> {
using type = std::experimental::pmr::memory_resource*;
using type = std::experimental::pmr::polymorphic_allocator<int>;
};
template <class ProviderT, int = 0>