patch file

curl_assert_connlock.patch

diff -urNp curl-7.65.1/lib/conncache.c curl-7.65.1/lib/conncache.c
--- curl-7.65.1/lib/conncache.c	2019-06-05 06:27:58.438954000 -0400
+++ curl-7.65.1/lib/conncache.c	2019-06-16 02:31:56.343444000 -0400
@@ -189,6 +189,11 @@ void Curl_conncache_unlock(struct Curl_e
   CONN_UNLOCK(data);
 }

+void Curl_conncache_lock(struct Curl_easy *data)
+{
+  CONN_LOCK(data);
+}
+
 /* Returns number of connections currently held in the connection cache.
    Locks/unlocks the cache itself!
 */
diff -urNp curl-7.65.1/lib/conncache.h curl-7.65.1/lib/conncache.h
--- curl-7.65.1/lib/conncache.h	2019-06-05 06:27:58.551953000 -0400
+++ curl-7.65.1/lib/conncache.h	2019-06-16 02:30:31.579141000 -0400
@@ -57,6 +57,7 @@ struct connectbundle *Curl_conncache_fin
                                                  struct conncache *connc,
                                                  const char **hostp);
 void Curl_conncache_unlock(struct Curl_easy *data);
+void Curl_conncache_lock(struct Curl_easy *data);
 /* returns number of connections currently held in the connection cache */
 size_t Curl_conncache_size(struct Curl_easy *data);
 size_t Curl_conncache_bundle_size(struct connectdata *conn);
diff -urNp curl-7.65.1/lib/url.c curl-7.65.1/lib/url.c
--- curl-7.65.1/lib/url.c	2019-06-05 06:27:58.440960000 -0400
+++ curl-7.65.1/lib/url.c	2019-06-16 02:33:30.576695000 -0400
@@ -1075,8 +1075,10 @@ ConnectionExists(struct Curl_easy *data,
         continue;

       if(conn_maxage(data, check, now) || extract_if_dead(check, data)) {
+        Curl_conncache_unlock(data);
         /* disconnect it */
         (void)Curl_disconnect(data, check, /* dead_connection */TRUE);
+        Curl_conncache_lock(data);
         continue;
       }