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[PATCH] PR libstdc++/81017 add noexcept to std::function move operations


I'm amazed nobody's noticed this before, but std::function's move
constructor and move assignment operator are not noexcept. Fixed like
so.

	PR libstdc++/81017
	* include/bits/std_function.h (function::function(function&&))
	(function::operator=(funtion&&)): Add noexcept.
	* testsuite/20_util/function/assign/move.cc: Check for noexcept.
	* testsuite/20_util/function/cons/move.cc: Likewise.

Tested powerpc64le-linux, committed to trunk.

I think this should be backported too.

Attachment: patch.txt
Description: Text document


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