diff --git a/jobs.c b/jobs.c
index 49820190..f38b0c3f 100644
--- a/jobs.c
+++ b/jobs.c
@@ -3597,6 +3597,7 @@ run_sigchld_trap (nchild)
   unwind_protect_int (jobs_list_frozen);
   unwind_protect_pointer (the_pipeline);
   unwind_protect_pointer (subst_assign_varlist);
+  unwind_protect_pointer (this_shell_builtin);
 
   /* We have to add the commands this way because they will be run
      in reverse order of adding.  We don't want maybe_set_sigchld_trap ()
diff --git a/patchlevel.h b/patchlevel.h
index b7c2ff4c..b5516c27 100644
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 11
+#define PATCHLEVEL 12
 
 #endif /* _PATCHLEVEL_H_ */