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pgsql: Fix libpq so that it reports PGRES_EMPTY_QUERY not - Mailing list pgsql-committers

From tgl@postgresql.org (Tom Lane)
Subject pgsql: Fix libpq so that it reports PGRES_EMPTY_QUERY not
Date
Msg-id 20090109185003.6C2CA754A1B@cvs.postgresql.org
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Log Message:
-----------
Fix libpq so that it reports PGRES_EMPTY_QUERY not PGRES_COMMAND_OK when an
empty query string is passed to PQexecParams and related functions.  Its
handling of the NoData response to Describe messages was subtly incorrect.
Per my report of yesterday.

Although I consider this a bug, it's a behavioral change that might affect
applications, so not back-patched.

In passing fix a second issue in the same code: it didn't react well to an
out-of-memory failure while trying to make the PGresult object.

Modified Files:
--------------
    pgsql/src/interfaces/libpq:
        fe-protocol3.c (r1.37 -> r1.38)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-protocol3.c?r1=1.37&r2=1.38)

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