BUG #8466: pg_basebackup backup database is not ok

The following bug has been logged on the website:

Bug reference: 8466
Logged by: liuguanhu
Email address: liuguanhu(at)gmail(dot)com
PostgreSQL version: 9.1.6
Operating system: CentOS 5.9
Description:

hi:
I try use pg_basebackup backup my postgresql cluster database,when I use a
shell script with cron.the postgresql log
say

2013-09-22 04:30:01.780
CST,"gameop_bak","",28478,"127.0.0.1:40884",523e01c9.6f3e,1,"sending backup
""20130922""",2013-09-22 04:30:01 CST,49/0,0,LOG,08006,"could not send data
to client: Connection reset by peer",,,,,,,,,"pg_basebackup"
2013-09-22 04:30:01.780
CST,"gameop_bak","",28478,"127.0.0.1:40884",523e01c9.6f3e,2,"sending backup
""20130922""",2013-09-22 04:30:01 CST,49/0,0,FATAL,XX000,"base backup could
not send data, aborting backup",,,,,,,,,"pg_basebackup"
2013-09-22 04:30:01.781
CST,"gameop_bak","",28478,"127.0.0.1:40884",523e01c9.6f3e,3,"sending backup
""20130922""",2013-09-22 04:30:01 CST,49/0,0,LOG,08006,"could not send data
to client: Broken pipe",,,,,,,,,"pg_basebackup"
2013-09-22 17:25:01.386
CST,"gameop_bak","",23241,"127.0.0.1:34349",523eb76d.5ac9,1,"sending backup
""20130922""",2013-09-22 17:25:01 CST,49/0,0,LOG,08006,"could not send data
to client: Connection reset by peer",,,,,,,,,"pg_basebackup"
2013-09-22 17:25:01.386
CST,"gameop_bak","",23241,"127.0.0.1:34349",523eb76d.5ac9,2,"sending backup
""20130922""",2013-09-22 17:25:01 CST,49/0,0,FATAL,XX000,"base backup could
not send data, aborting backup",,,,,,,,,"pg_basebackup"
2013-09-22 17:25:01.387
CST,"gameop_bak","",23241,"127.0.0.1:34349",523eb76d.5ac9,3,"sending backup
""20130922""",2013-09-22 17:25:01 CST,49/0,0,LOG,08006,"could not send data
to client: Broken pipe",,,,,,,,,"pg_basebackup"

that、 the pg_basebackup is not work ok