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[PATCH] PR libstdc++/83658 fix exception-safety in std::any::emplace


Fix for C++17's std::any.

	PR libstdc++/83658
	* include/std/any (any::__do_emplace): Only set _M_manager after
	constructing the contained object.
	* testsuite/20_util/any/misc/any_cast_neg.cc: Adjust dg-error line.
	* testsuite/20_util/any/modifiers/83658.cc: New test.

Tested x86_64-linux, committed to trunk.

Attachment: patch.txt
Description: Text document


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