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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0e93424521d504fad3355fa9dfebe8ad72927e03..a2648d8ea4c9a353476a3ea5912224b7f38f3d6d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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

diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index 2a82df1032ff277d8efb6a5a83c204273cd9a8d9..ae38366c2ca23e2600e007c83ff26851963d210f 100644 (file)
--- a/gcc/ipa-cp.c
+++ b/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;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3385000ec004d20572de789791b842a1cf1a92a2..b8b9b94468d45775dfd5d38501528eed63ff1f80 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+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

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr51694.c b/gcc/testsuite/gcc.c-torture/compile/pr51694.c
new file mode 100644 (file)
index 0000000..579a243
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr51694.c
@@ -0,0 +1,14 @@
+void
+foo (x, fn)
+  void (*fn) ();
+{
+  int a = baz ((void *) 0, x);
+  (*fn) (x, 0);
+}
+
+void
+bar (void)
+{
+  void *x = 0;
+  foo (x);
+}