From 9b88fc16677aa3c8a424ebe8d3e2e6397581d540 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 12 Aug 2002 19:18:45 +0000
Subject: [PATCH] (parse_reg_exp): If '|' is immediately followed by another
 '|', end of regex or enclosing ')', clear branch.

---
 posix/regcomp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/posix/regcomp.c b/posix/regcomp.c
index 0613de6553..9406383283 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -1807,6 +1807,8 @@ parse_reg_exp (regexp, preg, token, syntax, nest, err)
               return NULL;
             }
         }
+      else
+	branch = NULL;
       tree = create_tree (tree, branch, 0, new_idx);
       if (BE (new_idx == -1 || tree == NULL, 0))
         return *err = REG_ESPACE, NULL;