1 files changed, 73 insertions, 0 deletions
diff --git a/tests/libtest/lib1939.c b/tests/libtest/lib1939.c
new file mode 100644
index 000000000..644617712
--- /dev/null
+++ b/tests/libtest/lib1939.c
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#include "test.h"
+
+#include "memdebug.h"
+
+int test(char *URL)
+{
+  CURLM *multi;
+  CURL *easy;
+  int running_handles;
+
+  curl_global_init(CURL_GLOBAL_DEFAULT);
+
+  multi = curl_multi_init();
+  if(!multi)
+    return 1;
+
+  easy = curl_easy_init();
+  if(easy) {
+    CURLcode c;
+    CURLMcode m;
+
+    /* Crash only happens when using HTTPS */
+    c = curl_easy_setopt(easy, CURLOPT_URL, URL);
+    if(!c)
+      /* Any old HTTP tunneling proxy will do here */
+      c = curl_easy_setopt(easy, CURLOPT_PROXY, libtest_arg2);
+
+    if(c)
+      return 2;
+
+    /* We're going to drive the transfer using multi interface here, because we
+       want to stop during the middle. */
+    m = curl_multi_add_handle(multi, easy);
+
+    if(!m)
+      /* Run the multi handle once, just enough to start establishing an HTTPS
+         connection. */
+      m = curl_multi_perform(multi, &running_handles);
+
+    if(m)
+      return 3;
+
+    /* Close the easy handle *before* the multi handle. Doing it the other way
+       around avoids the issue. */
+    curl_easy_cleanup(easy);
+  }
+  curl_multi_cleanup(multi); /* double-free happens here */
+
+  curl_global_cleanup();
+  return CURLE_OK;
+}