nginx 0.5.13 *) Feature: the COPY and MOVE methods. *) Bugfix: the ngx_http_realip_module set garbage for requests passed via keep-alive connection. *) Bugfix: nginx did not work on big-endian 64-bit Linux. Thanks to Andrei Nigmatulin. *) Bugfix: now when IMAP/POP3 proxy receives too long command it closes the connection right away, but not after timeout. *) 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: nginx could not be built on platforms different from i386, amd64, sparc and ppc; bug appeared in 0.5.8.

--- a/src/core/ngx_shmtx.h
+++ b/src/core/ngx_shmtx.h
@@ -58,6 +58,8 @@ ngx_shmtx_trylock(ngx_shmtx_t *mtx)
     }
 
     ngx_log_abort(err, ngx_trylock_fd_n " failed");
+
+    return 0;
 }