re PR bootstrap/40430 (collect2.c fails to compile: new qualifiers in middle of…

re PR bootstrap/40430 (collect2.c fails to compile: new qualifiers in middle of multi-level non-const cast are unsafe)

	PR bootstrap/40430
	* collect2.c (main): Use CONST_CAST2 in code inside #if
	LINK_ELIMINATE_DUPLICATE_LDIRECTORIES.

From-SVN: r148434

gcc/ChangeLog

+2009-06-12  Ian Lance Taylor  <iant@google.com>
+
+	PR bootstrap/40430
+	* collect2.c (main): Use CONST_CAST2 in code inside #if
+	LINK_ELIMINATE_DUPLICATE_LDIRECTORIES.
+
 2009-06-12  Joey Ye  <joey.ye@intel.com>
 
 	PR middle-end/39146

gcc/collect2.c

@@ -1167,7 +1167,9 @@ main (int argc, char **argv)
 #else
 #if LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
 	    case 'L':
-	      if (is_in_args (arg, (const char **) ld1_argv, ld1-1))
+	      if (is_in_args (arg,
+			      CONST_CAST2 (const char **, char **, ld1_argv),
+			      ld1 - 1))
 		--ld1;
 	      break;
 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */