Trouble if mapping hostname with multiple address

Binary package hint: nginx

As describe at: http://nginx.org/pipermail/nginx/2010-December/024229.html
---
In ngx_inet.c, there is a code piece of function
"ngx_inet_resolve_host". If I set u->one_addr to 1， but unfortunately
this hostname map to multiple IP addresses, such as
[code]
10.37.4.92 myhost
127.0.0.1 myhost
[/code]
in /etc/hosts.

h->h_addr_list will be 2 entries before NULL. Each of them will be
converted to human readable format and assigned to u->addrs[ i ].
However, when one_addr is set, [b]u->addrs will be allocated ONLY ONE
ngx_addr_t mem.[/b] In this way, a mem crash is inevitable.

I set one_addr to 1 because I'm writing a custom module and want to
connect another server. Sadly the server is also running on the local
host with multiple IP in /etc/hosts. I want to connect the first IP
match that host name (10.37.4.92) because that server require a
non-lookback IP. I thought "one_addr" means "fetch the first found IP".
But seems I was wrong.

Besides this, I insist alloc mem with "i", but loop will h->h_addr_list
is very dangerous. Report an error is more suitable rather than leave a
time bomb.

Affected version: all versions!!!
--

$ apt-cache policy nginx
nginx:
  Installed: 0.7.65-1ubuntu2
  Candidate: 0.7.65-1ubuntu2
  Version table:
 *** 0.7.65-1ubuntu2 0
        500 http://mirrors.kernel.org/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status

$ nginx -V
nginx version: nginx/0.7.65
TLS SNI support enabled
configure arguments: --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid --lock-path=/var/lock/nginx.lock --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/body --http-proxy-temp-path=/var/lib/nginx/proxy --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug --with-http_stub_status_module --with-http_flv_module --with-http_ssl_module --with-http_dav_module --with-http_gzip_static_module --with-http_realip_module --with-mail --with-mail_ssl_module --with-ipv6 --add-module=/build/buildd/nginx-0.7.65/modules/nginx-upstream-fair

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid