20100108_0.c: New.

2010-01-10  Rafael Avila de Espindola  <espindola@google.com>

	* gcc.dg/lto/20100108_0.c: New.

2010-01-10  Rafael Avila de Espindola  <espindola@google.com>

	* lto-streamer-out.c (output_unreferenced_globals): Output static
	variables.

From-SVN: r155800

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2010-01-10  Rafael Avila de Espindola  <espindola@google.com>
+
+	* lto-streamer-out.c (output_unreferenced_globals): Output static
+	variables.
+
 2010-01-10  Steven Bosscher  <steven@gcc.gnu.org>
 
 	PR rtl-optimization/42621

gcc/lto-streamer-out.c

@@ -1973,12 +1973,15 @@ output_unreferenced_globals (cgraph_node_set set)
     {
       tree var = vnode->decl;
 
-      if (TREE_CODE (var) == VAR_DECL && TREE_PUBLIC (var))
+      if (TREE_CODE (var) == VAR_DECL)
         {
-          /* Outputting just the reference will not output the object itself
-             or references it might have.*/
+          /* Output the object in order to output references used in the
+             initialization. */
           lto_output_tree (ob, var, true);
-          lto_output_tree_ref (ob, var);
+
+          /* If it is public we also need a reference to the object itself. */
+          if (TREE_PUBLIC (var))
+            lto_output_tree_ref (ob, var);
         }
     }
 

gcc/testsuite/ChangeLog

@@ -1,3 +1,7 @@
+2010-01-10  Rafael Avila de Espindola  <espindola@google.com>
+
+	* gcc.dg/lto/20100108_0.c: New.
+
 2010-01-10  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.dg/graphite/pr40281.c (dg-options): Add -w.

gcc/testsuite/gcc.dg/lto/20100108_0.c

@@ -0,0 +1,9 @@
+/* { dg-lto-do assemble } */
+/* The problem with this testcase is that we were missing an undefined
+   reference to flag_exceptions. This can be tested with
+   GNUTARGET=plugin nm --plugin liblto_plugin.so 20100108_0.o
+   but we don't have support in the testsuite for doing it. */
+
+extern int flag_exceptions;
+static int *foo = &flag_exceptions;
+int **bar = &foo;