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	* go-gcc.cc (Backend::error_function): New function.
	(Backend::function): New function.
	(Backend::make_function): New function.
	(function_to_tree): New function.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203403 138bc75d-0d04-0410-961f-82ee72b054a4