ipa-cp.c (ipa_get_indirect_edge_target_1): Check that param_index is within…

ipa-cp.c (ipa_get_indirect_edge_target_1): Check that param_index is within bounds at the beginning of the function.

2013-06-11  Martin Jambor  <mjambor@suse.cz>

	* ipa-cp.c (ipa_get_indirect_edge_target_1): Check that param_index is
	within bounds at the beginning of the function.

From-SVN: r199953

gcc/ChangeLog

+2013-06-11  Martin Jambor  <mjambor@suse.cz>
+
+	* ipa-cp.c (ipa_get_indirect_edge_target_1): Check that param_index is
+	within bounds at the beginning of the function.
+
 2013-06-11  Alan Modra  <amodra@gmail.com>
 
 	* varasm.c (get_section): Don't die on !DECL_P decl.  Tidy error

gcc/ipa-cp.c

@@ -1481,7 +1481,8 @@ ipa_get_indirect_edge_target_1 (struct cgraph_edge *ie,
   tree otr_type;
   tree t;
 
-  if (param_index == -1)
+  if (param_index == -1
+      || known_vals.length () <= (unsigned int) param_index)
     return NULL_TREE;
 
   if (!ie->indirect_info->polymorphic)
@@ -1516,8 +1517,7 @@ ipa_get_indirect_edge_target_1 (struct cgraph_edge *ie,
 	    t = NULL;
 	}
       else
-	t = (known_vals.length () > (unsigned int) param_index
-	     ? known_vals[param_index] : NULL);
+	t = known_vals[param_index];
 
       if (t &&
 	  TREE_CODE (t) == ADDR_EXPR