tree-ssa-alias.c (setup_pointers_and_addressables): Don't remove TREE_ADDRESSABLE from RESULT_DECL.

	* tree-ssa-alias.c (setup_pointers_and_addressables): Don't
	remove TREE_ADDRESSABLE from RESULT_DECL.

testsuite/ChangeLog

	* g++.dg/tree-ssa/pr17153.C: New test.

From-SVN: r87703

gcc/ChangeLog

 2004-09-18  Diego Novillo  <dnovillo@redhat.com>
 
+	* tree-ssa-alias.c (setup_pointers_and_addressables): Don't
+	remove TREE_ADDRESSABLE from RESULT_DECL.
+
+2004-09-18  Diego Novillo  <dnovillo@redhat.com>
+
 	* tree-ssa-alias.c (dump_alias_info): Ignore NULL SSA_NAMEs.
 
 2004-09-18  Jan Hubicka  <jh@suse.cz>

gcc/testsuite/ChangeLog

+2004-09-18  Diego Novillo  <dnovillo@redhat.com>
+
+	* g++.dg/tree-ssa/pr17153.C: New test.
+
 2004-09-16  Geoffrey Keating  <geoffk@apple.com>
 
 	PR pch/13361

gcc/testsuite/g++.dg/tree-ssa/pr17153.C

+/* The alias analyzer was marking RETVAL non-addressable, but RETVAL
+   is a special variable that's available across different functions.  */
+void foo(const char*);
+
+struct A {};
+
+struct B : A
+{
+    B(){}
+    B bar()
+    {
+        foo(__PRETTY_FUNCTION__);
+        return B();
+    };
+};
+
+B b=B().bar();

gcc/tree-ssa-alias.c

@@ -1347,6 +1347,7 @@ setup_pointers_and_addressables (struct alias_info *ai)
 	{
 	  if (!bitmap_bit_p (ai->addresses_needed, v_ann->uid)
 	      && v_ann->mem_tag_kind == NOT_A_TAG
+	      && TREE_CODE (var) != RESULT_DECL
 	      && !is_global_var (var))
 	    {
 	      /* The address of VAR is not needed, remove the