(expand_builtin, case BUILT_IN_NEXT_ARG): Don't warn when

no argument if this is a varargs routine.

From-SVN: r8912

diff --git a/gcc/expr.c b/gcc/expr.c
index f810a25..6e20f79 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -7386,7 +7386,7 @@ expand_builtin (exp, target, subtarget, mode, ignore)
            if (arg != last_parm)
              warning ("second parameter of `va_start' not last named argument");
          }
-       else
+       else if (! current_function_varargs)
          /* Evidently an out of date version of <stdarg.h>; can't validate
             va_start's second argument, but can still work as intended.  */
          warning ("`__builtin_next_arg' called without an argument");