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From af48f6fec9a7b6374d4153c5db894d4a1f349645 Mon Sep 17 00:00:00 2001
From: Jonas Jelten <jj@sft.mx>
Date: Sat, 2 Feb 2019 20:53:37 +0100
Subject: [PATCH] db_gdbm: fix gdbm_errno overlay from gdbm_close

`gdbm_close` also sets gdbm_errno since version 1.17.
This leads to a problem in `libsasl` as the `gdbm_close` incovation overlays
the `gdbm_errno` value which is then later used for the error handling.
---
 sasldb/db_gdbm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sasldb/db_gdbm.c b/sasldb/db_gdbm.c
index ee56a6bf..c908808e 100644
--- a/sasldb/db_gdbm.c
+++ b/sasldb/db_gdbm.c
@@ -107,9 +107,11 @@ int _sasldb_getdata(const sasl_utils_t *utils,
   gkey.dptr = key;
   gkey.dsize = key_len;
   gvalue = gdbm_fetch(db, gkey);
+  int fetch_errno = gdbm_errno;
+
   gdbm_close(db);
   if (! gvalue.dptr) {
-      if (gdbm_errno == GDBM_ITEM_NOT_FOUND) {
+      if (fetch_errno == GDBM_ITEM_NOT_FOUND) {
           utils->seterror(conn, SASL_NOLOG,
 			  "user: %s@%s property: %s not found in %s",
 			  authid, realm, propName, path);