From 32f1c74166b04b4cb4d2bd057c23a575d4b2d24e Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org>
Date: Mon, 9 Aug 2021 09:54:19 +0300
Subject: Make parseopt reentrant.

* src/parseopt.c (parseopt_first): Initialize option tables to NULL.
---
 src/parseopt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/parseopt.c b/src/parseopt.c
index d291632..bc47597 100644
--- a/src/parseopt.c
+++ b/src/parseopt.c
@@ -193,10 +193,13 @@ int
 parseopt_first (int pc, char **pv, struct gdbm_option *opts)
 {
   free (option_tab);
+  option_tab = NULL;
   free (short_options);
+  short_options = NULL;
   short_option_count = short_option_max = 0;
 #ifdef HAVE_GETOPT_LONG
   free (long_options);
+  long_options = NULL;
   long_option_count = long_option_max = 0;
 #endif
   add_options (opts);
-- 
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