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[PATCH] Define __cpp_lib_byte feature-test macro

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: Fri, 20 Oct 2017 19:18:54 +0100
Subject: [PATCH] Define __cpp_lib_byte feature-test macro
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The recent SD-6 drafts define a macro for std::byte, so this patch
adds it.

	* include/c_global/cstddef: Define __cpp_lib_byte feature-test macro.
	* testsuite/18_support/byte/requirements.cc: Check macro.

Tested powerpc64le-linux, committed to trunk and gcc-7-branch.

Attachment: patch.txt
Description: Text document

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