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[PATCH] P0325R4 to_array from LFTS with updates

From: Jonathan Wakely <jwakely at redhat dot com>
To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Thu, 8 Aug 2019 11:18:43 +0100
Subject: [PATCH] P0325R4 to_array from LFTS with updates

As an extension to what the standard requires, this also adds
conditional noexcept-specifiers to the std::to_array functions.

	P0325R4 to_array from LFTS with updates
	* include/experimental/array (to_array): Qualify call to __to_array.
	* include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
	* include/std/version (__cpp_lib_to_array): Likewise.
	* testsuite/23_containers/array/creation/1.cc: New test.
	* testsuite/23_containers/array/creation/2.cc: New test.
	* testsuite/23_containers/array/creation/3_neg.cc: New test.
	* testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
	Use zero for dg-error line number.

Another new C++20 feature. Tested x86_64-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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