diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index 11d9fb7cff..ce97740b9a 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -209,7 +209,7 @@ test1548 test1549 test1550 test1551 test1552 test1553 test1554 test1555 \
test1556 test1557 test1558 test1559 test1560 test1561 test1562 test1563 \
test1564 test1565 test1566 test1567 test1568 test1569 test1570 test1571 \
test1572 test1573 test1574 test1575 test1576 test1577 test1578 test1579 \
-test1580 test1581 \
+test1580 test1581 test1582 \
\
test1590 test1591 test1592 test1593 test1594 test1595 test1596 test1597 \
test1598 test1599 test1600 test1601 test1602 test1603 test1604 test1605 \
diff --git a/tests/data/test1582 b/tests/data/test1582
new file mode 100644
index 0000000000..146863fd69
--- /dev/null
+++ b/tests/data/test1582
@@ -0,0 +1,54 @@
+
+
+
+HTTPS
+GSS-API
+
+
+
+# Server-side
+
+
+HTTP/1.1 401 OK
+Date: Tue, 09 Nov 2030 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 7
+WWW-Authenticate: Negotiate
+
+nomnom
+
+
+
+# Client-side
+
+
+SSL
+GSS-API
+OpenSSL
+
+
+http
+https
+
+
+Negotiate over HTTPS with channel binding
+
+
+lib%TESTNUMBER
+
+
+https://%HOSTIP:%HTTPSPORT/
+
+
+
+
+
+GET / HTTP/1.1
+Host: %HOSTIP:%HTTPSPORT
+Accept: */*
+
+
+
+
+
+
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index cac833f26f..67ffabad0b 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -91,6 +91,7 @@ TESTS_C = \
lib1559.c lib1560.c lib1564.c lib1565.c \
lib1567.c lib1568.c lib1569.c lib1571.c \
lib1576.c \
+ lib1582.c \
lib1591.c lib1592.c lib1593.c lib1594.c lib1597.c \
lib1598.c lib1599.c \
lib1662.c \
diff --git a/tests/libtest/lib1582.c b/tests/libtest/lib1582.c
new file mode 100644
index 0000000000..0e209beee4
--- /dev/null
+++ b/tests/libtest/lib1582.c
@@ -0,0 +1,60 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, , et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#include "first.h"
+
+#include "memdebug.h"
+
+static CURLcode test_lib1582(const char *URL)
+{
+ CURLcode res;
+ CURL *curl;
+
+ if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
+ curl_mfprintf(stderr, "curl_global_init() failed\n");
+ return TEST_ERR_MAJOR_BAD;
+ }
+
+ curl = curl_easy_init();
+ if(!curl) {
+ curl_mfprintf(stderr, "curl_easy_init() failed\n");
+ curl_global_cleanup();
+ return TEST_ERR_MAJOR_BAD;
+ }
+
+ test_setopt(curl, CURLOPT_HEADER, 1L);
+ test_setopt(curl, CURLOPT_VERBOSE, 1L);
+ test_setopt(curl, CURLOPT_URL, URL);
+ test_setopt(curl, CURLOPT_HTTPAUTH, (long)CURLAUTH_NEGOTIATE);
+ test_setopt(curl, CURLOPT_USERPWD, ":");
+ test_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+ test_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
+
+ res = curl_easy_perform(curl);
+
+test_cleanup:
+ curl_easy_cleanup(curl);
+ curl_global_cleanup();
+
+ return res;
+}