PR c/86125 - missing -Wbuiltin-declaration-mismatch on a mismatched return type
PR middle-end/86308 - ICE in verify_gimple calling index() with an invalid declaration
PR c/86125 - missing -Wbuiltin-declaration-mismatch on a mismatched return type
PR c/88886 - [9 Regression] ice in get_constant, at c-family/c-format.c:292

gcc/c/ChangeLog:

	PR c/86125
	PR c/88886
	PR middle-end/86308
	* c-decl.c (match_builtin_function_types): Add arguments.
	(diagnose_mismatched_decls): Diagnose mismatched declarations
	of built-ins more strictly.

gcc/testsuite/ChangeLog:

	PR c/86125
	PR c/88886
	PR middle-end/86308
	* gcc.dg/Wbuiltin-declaration-mismatch-6.c: New test.
	* gcc.dg/Wbuiltin-declaration-mismatch-7.c: New test.
	* gcc.dg/Wbuiltin-declaration-mismatch-8.c: New test.
	* gcc.dg/Wbuiltin-declaration-mismatch-9.c: New test.
	* gcc.dg/Wbuiltin-declaration-mismatch-10.c: New test.
	* gcc.dg/builtins-69.c: New test.
	* gcc.dg/Wint-conversion-2.c: Add expected warning.
	* gcc.c-torture/execute/eeprof-1.c: Adjust function signatures.

From-SVN: r268251