re PR middle-end/39360 (ICE in referenced_var_lookup, at tree-dfa.c:563)

PR middle-end/39360
	* tree-flow.h (add_referenced_var): Return bool instead of void.
	* tree-dfa.c (add_referenced_var): Return result of
	referenced_var_check_and_insert call.
	* tree-inline.c (expand_call_inline): Call add_referenced_var instead
	of referenced_var_check_and_insert.

	* gcc.c-torture/compile/pr39360.c: New test.

From-SVN: r144683

gcc/ChangeLog

@@ -1,5 +1,12 @@
 2009-03-06  Jakub Jelinek  <jakub@redhat.com>
 
+	PR middle-end/39360
+	* tree-flow.h (add_referenced_var): Return bool instead of void.
+	* tree-dfa.c (add_referenced_var): Return result of
+	referenced_var_check_and_insert call.
+	* tree-inline.c (expand_call_inline): Call add_referenced_var instead
+	of referenced_var_check_and_insert.
+
 	PR debug/39372
 	* dwarf2out.c (add_abstract_origin_attribute): Return
 	origin_die.

gcc/testsuite/ChangeLog

@@ -1,5 +1,8 @@
 2009-03-06  Jakub Jelinek  <jakub@redhat.com>
 
+	PR middle-end/39360
+	* gcc.c-torture/compile/pr39360.c: New test.
+
 	PR debug/39372
 	* g++.dg/debug/dwarf2/static-local-var-in-ctor.C: New test.
 

gcc/testsuite/gcc.c-torture/compile/pr39360.c

@@ -0,0 +1,16 @@
+/* PR middle-end/39360 */
+
+static int a[] = { 1 };
+
+static inline void
+bar (int **x)
+{
+  static int *c[2] = { 0, a };
+  *x = c[1];
+}
+
+int
+foo (int **x)
+{
+  bar (x);
+}

gcc/tree-dfa.c

@@ -1,6 +1,6 @@
 /* Data flow functions for trees.
-   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008 Free Software
+   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
-   Foundation, Inc.
+   Free Software Foundation, Inc.
    Contributed by Diego Novillo <dnovillo@redhat.com>
 
 This file is part of GCC.
@@ -639,7 +639,7 @@ set_default_def (tree var, tree def)
 
 /* Add VAR to the list of referenced variables if it isn't already there.  */
 
-void
+bool
 add_referenced_var (tree var)
 {
   var_ann_t v_ann;
@@ -655,7 +655,7 @@ add_referenced_var (tree var)
       
       /* Tag's don't have DECL_INITIAL.  */
       if (MTAG_P (var))
-	return;
+	return true;
 
       /* Scan DECL_INITIAL for pointer variables as they may contain
 	 address arithmetic referencing the address of other
@@ -667,7 +667,11 @@ add_referenced_var (tree var)
 	     optimizers.  */
           && !DECL_EXTERNAL (var))
       	walk_tree (&DECL_INITIAL (var), find_vars_r, NULL, 0);
+
+      return true;
     }
+
+  return false;
 }
 
 /* Remove VAR from the list.  */

gcc/tree-flow.h

@@ -768,7 +768,7 @@ extern void dump_referenced_vars (FILE *);
 extern void dump_variable (FILE *, tree);
 extern void debug_variable (tree);
 extern tree get_virtual_var (tree);
-extern void add_referenced_var (tree);
+extern bool add_referenced_var (tree);
 extern void remove_referenced_var (tree);
 extern void mark_symbols_for_renaming (gimple);
 extern void find_new_referenced_vars (gimple);

gcc/tree-inline.c

@@ -1,5 +1,5 @@
 /* Tree inlining.
-   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
    Contributed by Alexandre Oliva <aoliva@redhat.com>
 
@@ -3383,7 +3383,7 @@ expand_call_inline (basic_block bb, gimple stmt, copy_body_data *id)
       var = TREE_VALUE (t_step);
       if (TREE_STATIC (var) && !TREE_ASM_WRITTEN (var))
 	{
-	  if (var_ann (var) && referenced_var_check_and_insert (var))
+	  if (var_ann (var) && add_referenced_var (var))
 	    cfun->local_decls = tree_cons (NULL_TREE, var,
 					   cfun->local_decls);
 	}