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pgsql: Fix off-by-one in pg_xlogdump's fuzzy_open_file().

From:	Andres Freund <andres(at)anarazel(dot)de>
To:	pgsql-committers(at)postgresql(dot)org
Subject:	pgsql: Fix off-by-one in pg_xlogdump's fuzzy_open_file().
Date:	2015-01-04 14:37:14
Message-ID:	E1Y7mIs-0007oN-Di@gemulon.postgresql.org
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Fix off-by-one in pg_xlogdump's fuzzy_open_file().

In the unlikely case of stdin (fd 0) being closed, the off-by-one
would lead to pg_xlogdump failing to open files.

Spotted by Coverity.

Backpatch to 9.3 where pg_xlogdump was introduced.

Branch
------
REL9_3_STABLE

Modified Files
--------------
contrib/pg_xlogdump/pg_xlogdump.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

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