nginx 0.5.7 *) Feature: the ssl_session_cache storage optimization. *) Bugfixes in the "ssl_session_cache" and "limit_zone" directives. *) Bugfix: the segmentation fault was occurred on start or while reconfiguration if the "ssl_session_cache" or "limit_zone" directives were used on 64-bit platforms. *) Bugfix: a segmentation fault occurred if the "add_before_body" or "add_after_body" directives were used and there was no "Content-Type" header line in response. *) Bugfix: the OpenSSL library was always built with the threads support. Thanks to Den Ivanov. *) Bugfix: the PCRE-6.5+ library and the icc compiler compatibility.

--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -531,6 +531,12 @@ ngx_event_pipe_write_to_downstream(ngx_e
             } else if (!p->cachable && p->in) {
                 cl = p->in;
 
+                ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
+                               "pipe write buf ls:%d %p %z",
+                               cl->buf->last_shadow,
+                               cl->buf->pos,
+                               cl->buf->last - cl->buf->pos);
+
                 if (cl->buf->recycled
                     && cl->buf->last_shadow
                     && bsize + cl->buf->last - cl->buf->pos > p->busy_size)