2004-07-24  Alexander Kabaev  <kan@freebsd.org>
	    Zack Weinberg  <zack@codesourcery.com

	PR 16684
	* c-decl.c (diagnose_mismatched_decls): Don't issue a
	redundant-declaration warning the first time a builtin is
	declared explicitly.
testsuite:
	* gcc.dg/Wredundant-decls-1.c: New test case.

From-SVN: r85140