(undo_all): Clear previous_undos field.

From-SVN: r12544

diff --git a/gcc/combine.c b/gcc/combine.c
index b83f020a98ba5b1feb8e6791b8bcdb40f2205a09..03b86449355bb61becebb939dc227d7e7d9ef242 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -2429,7 +2429,7 @@ undo_all ()
     }
 
   obfree (undobuf.storage);
-  undobuf.undos = 0;
+  undobuf.undos = undobuf.previous_undos = 0;
 
   /* Clear this here, so that subsequent get_last_value calls are not
      affected.  */