PR c++/83871 - wrong code for attribute const and pure on distinct template specializ...

PR c++/83871 - wrong code for attribute const and pure on distinct template specializations
PR c++/83503 - [8 Regression] bogus -Wattributes for const and pure on function template specialization

gcc/ChangeLog:

	PR c++/83871
	* gcc/doc/invoke.texi (-Wmissing-attributes): New option.
	* gcc/print-tree.c (print_node): Handle DECL_UNINLINABLE.

gcc/c-family/ChangeLog:

	PR c++/83871
	* c.opt (-Wmissing-attributes): New option.

gcc/cp/ChangeLog:

	PR c++/83871
	PR c++/83503
	* cp-tree.h (warn_spec_missing_attributes): New function.
	((check_explicit_specialization): Add an argument.  Call the above
	function.
	* decl.c (duplicate_decls): Avoid applying primary function template's
	attributes to its explicit specializations.
	cp/pt.c (warn_spec_missing_attributes): Define.

gcc/testsuite/ChangeLog:

	PR c++/83871
	PR c++/83503
	* g++.dg/Wmissing-attributes.C: New test.
	* g++.dg/ext/attr-const-pure.C: New test.
	* g++.dg/ext/attr-const.C: New test.
	* g++.dg/ext/attr-deprecated-2.C: New test.
	* g++.dg/ext/attr-malloc-2.C: New test.
	* g++.dg/ext/attr-malloc.C: New test.
	* g++.dg/ext/attr-noinline-2.C: New test.
	* g++.dg/ext/attr-noinline.C: New test.
	* g++.dg/ext/attr-nonnull.C: New test.
	* g++.dg/ext/attr-noreturn-2.C: New test.
	* g++.dg/ext/attr-noreturn.C: New test.
	* g++.dg/ext/attr-nothrow-2.C: New test.
	* g++.dg/ext/attr-nothrow.C: New test.
	* g++.dg/ext/attr-optimize.C: New test.
	* g++.dg/ext/attr-pure.C: New test.
	* g++.dg/ext/attr-returns-nonnull.C: New test.
	* g++.dg/ext/attr-warning.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@258045 138bc75d-0d04-0410-961f-82ee72b054a4