(libcpp)

	PR preprocessor/17610
	* directives.c (do_include_common): Error out if an empty filename
	is given for #include (or #include_next or #import).

(gcc)
	PR preprocessor/17610
	* testsuite/gcc.dg/cpp/empty-include.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@91428 138bc75d-0d04-0410-961f-82ee72b054a4