re PR tree-optimization/41841 (segfault using '-O -fipa-cp -fipa-struct-reorg…

re PR tree-optimization/41841 (segfault using '-O -fipa-cp -fipa-struct-reorg -fwhole-program -fprofile-generate')

	PR tree-optimization/41841
	* ipa-struct-reorg.c (build_data_structure): Don't attempt to look at
	local variables of not yet materialized clones.

	* gcc.dg/pr41841.c: New test.

From-SVN: r153807

gcc/ChangeLog

 2009-11-02  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/41841
+	* ipa-struct-reorg.c (build_data_structure): Don't attempt to look at
+	local variables of not yet materialized clones.
+
 	PR debug/41893
 	* cfgexpand.c (expand_debug_expr): Don't attempt to create DECL_RTL
 	for a VOIDmode variable.

gcc/ipa-struct-reorg.c

@@ -3380,6 +3380,14 @@ build_data_structure (VEC (tree, heap) **unsuitable_types)
 	      if (is_candidate (var, &type, unsuitable_types))
 		add_structure (type);
 
+	  if (fn == NULL)
+	    {
+	      /* Skip cones that haven't been materialized yet.  */
+	      gcc_assert (c_node->clone_of
+			  && c_node->clone_of->decl != c_node->decl);
+	      continue;
+	    }
+
 	  /* Check function local variables.  */
 	  for (var_list = fn->local_decls; var_list; 
 	       var_list = TREE_CHAIN (var_list))

gcc/testsuite/ChangeLog

 2009-11-02  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/41841
+	* gcc.dg/pr41841.c: New test.
+
 	PR debug/41893
 	* gcc.dg/debug/pr41893-1.c: New test.
 	* gcc.dg/debug/pr41893-2.c: New file.

gcc/testsuite/gcc.dg/pr41841.c

+/* PR tree-optimization/41841 */
+/* { dg-do compile } */
+/* { dg-options "-O -fipa-struct-reorg -fwhole-program -fipa-cp" } */
+
+typedef struct S *T;
+typedef struct { } *U;
+extern int f1 (void);
+
+static void
+f3 (U x, int y)
+{
+  T a = (T) x;
+  y && f1 ();
+}
+
+static void
+f2 (T x)
+{
+  f3 ((U) x, 1);
+}
+
+void *volatile a __attribute__((used)) = f2;