2002-09-27  Alexander N. Kabaev <ak03@gte.com>

	PR preprocessor/8055
	* cppmacro.c (stringify_arg): Do not overflow the buffer
	with the terminating NUL when the argument to be stringified
	has no tokens.
	* testsuite/gcc.dg/cpp/20020927-1.c: New.

From-SVN: r57599