re PR tree-optimization/51694 (ICE while compiling alliance package)

	PR tree-optimize/51694
	* ipa-cp.c (ipa_get_indirect_edge_target): Add bounds checks.

From-SVN: r182993

gcc/ChangeLog

+2012-01-08  Jan Hubicka  <jh@suse.cz>
+
+	PR tree-optimize/51694
+	* ipa-cp.c (ipa_get_indirect_edge_target): Add bounds checks.
+
 2012-01-08  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* doc/cpp.texi (Predefined Macros): __STRICT_ANSI__ is defined

gcc/ipa-cp.c

@@ -1112,7 +1112,8 @@ ipa_get_indirect_edge_target (struct cgraph_edge *ie,
 
   if (!ie->indirect_info->polymorphic)
     {
-      tree t = VEC_index (tree, known_vals, param_index);
+      tree t = (VEC_length (tree, known_vals) > param_index
+	        ? VEC_index (tree, known_vals, param_index) : NULL);
       if (t &&
 	  TREE_CODE (t) == ADDR_EXPR
 	  && TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL)
@@ -1126,7 +1127,7 @@ ipa_get_indirect_edge_target (struct cgraph_edge *ie,
   otr_type = ie->indirect_info->otr_type;
 
   t = VEC_index (tree, known_vals, param_index);
-  if (!t && known_binfos)
+  if (!t && known_binfos && VEC_length (tree, known_binfos) > param_index)
     t = VEC_index (tree, known_binfos, param_index);
   if (!t)
     return NULL_TREE;

gcc/testsuite/ChangeLog

 2012-01-07  Jan Hubicka  <jh@suse.cz>
 
+	PR tree-optimize/51694
+	* gcc.c-torture/compile/pr51694.c: new testcase.
+
+2012-01-07  Jan Hubicka  <jh@suse.cz>
+
 	PR tree-optimization/51600
 	* g++.dg/torture/pr51600.C: New testcase.
 

gcc/testsuite/gcc.c-torture/compile/pr51694.c

+void
+foo (x, fn)
+  void (*fn) ();
+{
+  int a = baz ((void *) 0, x);
+  (*fn) (x, 0);
+}
+
+void
+bar (void)
+{
+  void *x = 0;
+  foo (x);
+}