re PR tree-optimization/24365 (statement makes a memory store with complex)

        PR tree-opt/24365
        * tree-inline.c (declare_return_variable): Just don't use the
        modify target if it's a gimple complex reg and the return slot
        isn't.

From-SVN: r110888

gcc/ChangeLog

+2006-02-11  Jason Merrill  <jason@redhat.com>
+
+	PR tree-opt/24365
+	* tree-inline.c (declare_return_variable): Just don't use the
+	modify target if it's a gimple complex reg and the return slot
+	isn't.
+
 2006-02-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* doc/contrib.texi: Update my entry.

gcc/tree-inline.c

@@ -1222,9 +1222,10 @@ declare_return_variable (copy_body_data *id, tree return_slot_addr,
 	    use_it = false;
 	  else if (is_global_var (base_m))
 	    use_it = false;
-	  else if (TREE_CODE (TREE_TYPE (base_m)) == COMPLEX_TYPE
-		   && !DECL_COMPLEX_GIMPLE_REG_P (result))
-	    DECL_COMPLEX_GIMPLE_REG_P (base_m) = 0;
+	  else if (TREE_CODE (TREE_TYPE (result)) == COMPLEX_TYPE
+		   && !DECL_COMPLEX_GIMPLE_REG_P (result)
+		   && DECL_COMPLEX_GIMPLE_REG_P (base_m))
+	    use_it = false;
 	  else if (!TREE_ADDRESSABLE (base_m))
 	    use_it = true;
 	}