avr.c (avr_print_operand): Fix "format not a string literal" build warnings.

	* config/avr/avr.c (avr_print_operand): Fix "format not a string
	literal" build warnings.
	(avr_print_operand_address): Dito.

From-SVN: r237588

gcc/ChangeLog

+2016-06-20  Georg-Johann Lay  <avr@gjlay.de>
+
+	* config/avr/avr.c (avr_print_operand): Fix "format not a string
+	literal" build warnings.
+	(avr_print_operand_address): Dito.
+
 2016-06-19  David Edelsohn  <dje.gcc@gmail.com>
 
 	PR target/71375

gcc/config/avr/avr.c

@@ -2170,7 +2170,7 @@ avr_print_operand_address (FILE *file, machine_mode /*mode*/, rtx addr)
   switch (GET_CODE (addr))
     {
     case REG:
-      fprintf (file, ptrreg_to_str (REGNO (addr)));
+      fprintf (file, "%s", ptrreg_to_str (REGNO (addr)));
       break;
 
     case PRE_DEC:
@@ -2284,12 +2284,12 @@ avr_print_operand (FILE *file, rtx x, int code)
   else if (code == 'E' || code == 'F')
     {
       rtx op = XEXP(x, 0);
-      fprintf (file, reg_names[REGNO (op) + ef]);
+      fprintf (file, "%s", reg_names[REGNO (op) + ef]);
     }
   else if (code == 'I' || code == 'J')
     {
       rtx op = XEXP(XEXP(x, 0), 0);
-      fprintf (file, reg_names[REGNO (op) + ij]);
+      fprintf (file, "%s", reg_names[REGNO (op) + ij]);
     }
   else if (REG_P (x))
     {
@@ -2298,7 +2298,7 @@ avr_print_operand (FILE *file, rtx x, int code)
       else if (code == 'r' && REGNO (x) < 32)
         fprintf (file, "%d", (int) REGNO (x));
       else
-        fprintf (file, reg_names[REGNO (x) + abcd]);
+        fprintf (file, "%s", reg_names[REGNO (x) + abcd]);
     }
   else if (CONST_INT_P (x))
     {