PQmakeEmptyPGresult() will return NULL if malloc() fails for required PGresult struct.
Index: doc/src/sgml/libpq.sgml =================================================================== RCS file: /projects/cvsroot/pgsql/doc/src/sgml/libpq.sgml,v retrieving revision 1.184 diff -u -c -r1.184 libpq.sgml *** doc/src/sgml/libpq.sgml 10 Jun 2005 03:02:01 -0000 1.184 --- doc/src/sgml/libpq.sgml 10 Jun 2005 06:45:28 -0000 *************** *** 1657,1663 **** <para> This is <application>libpq</>'s internal function to allocate and initialize an empty ! <structname>PGresult</structname> object. It is exported because some applications find it useful to generate result objects (particularly objects with error status) themselves. If <parameter>conn</parameter> is not null and <parameter>status</> indicates an error, the current error message of the specified connection is copied into the <structname>PGresult</structname>. --- 1657,1664 ---- <para> This is <application>libpq</>'s internal function to allocate and initialize an empty ! <structname>PGresult</structname> object. Function will return NULL if required memory ! couldn't be allocated. It is exported because some applications find it useful to generate result objects (particularly objects with error status) themselves. If <parameter>conn</parameter> is not null and <parameter>status</> indicates an error, the current error message of the specified connection is copied into the <structname>PGresult</structname>. Index: src/interfaces/libpq/fe-exec.c =================================================================== RCS file: /projects/cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v retrieving revision 1.139 diff -u -c -r1.139 fe-exec.c *** src/interfaces/libpq/fe-exec.c 21 Jun 2003 21:51:34 -0000 1.139 --- src/interfaces/libpq/fe-exec.c 10 Jun 2005 06:45:30 -0000 *************** *** 130,135 **** --- 130,137 ---- PGresult *result; result = (PGresult *) malloc(sizeof(PGresult)); + if (!result) + return NULL; result->ntups = 0; result->numAttributes = 0;
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