# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1162838760 0
# Node ID 3681cb9bde7d72d078047fe3035cb5d561bf5baf
# Parent  a0ce60f12e6b8c28928913058fafea1a186ab77d
fix FastCGI "zero size buf" alert

diff --git a/src/event/ngx_event_pipe.c b/src/event/ngx_event_pipe.c
--- a/src/event/ngx_event_pipe.c
+++ b/src/event/ngx_event_pipe.c
@@ -511,6 +511,7 @@ ngx_event_pipe_write_to_downstream(ngx_e
                 cl = p->out;
 
                 if (cl->buf->recycled
+                    && cl->buf->last_shadow
                     && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
                 {
                     flush = 1;
@@ -525,6 +526,7 @@ ngx_event_pipe_write_to_downstream(ngx_e
                 cl = p->in;
 
                 if (cl->buf->recycled
+                    && cl->buf->last_shadow
                     && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
                 {
                     flush = 1;