nginx 0.7.12 *) Feature: the "server_name" directive supports empty name "". *) Feature: the "gzip_disable" directive supports special "msie6" mask. *) Bugfix: if the "max_fails=0" parameter was used in upstream with several servers, then a worker process exited on a SIGFPE signal. Thanks to Maxim Dounin. *) Bugfix: a request body was dropped while redirection via an "error_page" directive. *) Bugfix: a full response was returned for request method HEAD while redirection via an "error_page" directive. *) Bugfix: the $r->header_in() method did not return value of the "Host", "User-Agent", and "Connection" request header lines; the bug had appeared in 0.7.0.

--- a/src/core/ngx_hash.c
+++ b/src/core/ngx_hash.c
@@ -220,6 +220,10 @@ ngx_hash_find_combined(ngx_hash_combined
         }
     }
 
+    if (len == 0) {
+        return NULL;
+    }
+
     if (hash->wc_head && hash->wc_head->hash.buckets) {
         value = ngx_hash_find_wc_head(hash->wc_head, name, len);