nginx 0.5.8 *) Bugfix: a segmentation fault might occur if "client_body_in_file_only on" was used and a request body was small. *) Bugfix: a segmentation fault occurred if "client_body_in_file_only on" and "proxy_pass_request_body off" or "fastcgi_pass_request_body off" directives were used, and nginx switched to a next upstream. *) Bugfix: if the "proxy_buffering off" directive was used and a client connection was non-active, then the connection was closed after send timeout; bug appeared in 0.4.7. *) Bugfix: if the "epoll" method was used and a client closed a connection prematurely, then nginx closed the connection after a send timeout only. *) Bugfix: the "[alert] zero size buf" error when FastCGI server was used. *) Bugfixes in the "limit_zone" directive.

--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -77,6 +77,7 @@
 #define NGX_HTTP_REQUEST_TIME_OUT          408
 #define NGX_HTTP_CONFLICT                  409
 #define NGX_HTTP_LENGTH_REQUIRED           411
+#define NGX_HTTP_PRECONDITION_FAILED       412
 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE  413
 #define NGX_HTTP_REQUEST_URI_TOO_LARGE     414
 #define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE    415
@@ -193,6 +194,7 @@ typedef struct {
 #if (NGX_HTTP_DAV)
     ngx_table_elt_t                  *depth;
     ngx_table_elt_t                  *destination;
+    ngx_table_elt_t                  *overwrite;
     ngx_table_elt_t                  *date;
 #endif