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[PATCH] PR libstdc++/91067 add more missing exports for directory iterators

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, 29 Aug 2019 13:16:19 +0100
Subject: [PATCH] PR libstdc++/91067 add more missing exports for directory iterators

	PR libstdc++/91067
	* acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
	* configure: Regenerate.
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
	missing symbols.
	* testsuite/27_io/filesystem/iterators/91067.cc: Test move
	constructors.
	* testsuite/util/testsuite_abi.cc: Add new symbol version.

As mentioned yesterday, we need to add some more exports for
std::filesystem directory iterators. As discussed in PR 91067 Clang
inlines the move constructor and optimises it to a tail call to the C2
move constructor of __shared_ptr, which wasn't exported.

Tested x86_64-linux, i686-linux, powerpc64-linux. Committing to trunk
and (later today) gcc-9-branch.

Attachment: patch.txt
Description: Text document

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