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Don't call PQclear until the struct is really no longer going to be used.

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Per Coverity bug #304.  Thanks to Martijn van Oosterhout for reporting it.

Zero out the pointer fields of PGresult so that these mistakes are more
easily catched, per discussion.
This commit is contained in:
Alvaro Herrera 2006-05-28 17:23:29 +00:00
parent 7a6676d9df
commit 117d73a9e7
2 changed files with 10 additions and 5 deletions
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7
src/bin/pg_dump/pg_dump.c
View File

@ -12,7 +12,7 @@
* by PostgreSQL
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.434 2006/05/26 23:48:54 momjian Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.435 2006/05/28 17:23:29 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -1445,8 +1445,6 @@ dumpStdStrings(Archive *AH)
check_sql_result(res, g_conn, qry->data, PGRES_TUPLES_OK);
PQclear(res);
resetPQExpBuffer(qry);
std_strings = (strcmp(PQgetvalue(res, 0, 0), "on") == 0);
@ -1454,7 +1452,8 @@ dumpStdStrings(Archive *AH)
appendStringLiteral(qry, PQgetvalue(res, 0, 0), true, !std_strings);
appendPQExpBuffer(qry, ";\n");
puts(PQgetvalue(res, 0, 0));
PQclear(res);
}
ArchiveEntry(AH, nilCatalogId, createDumpId(),

8
src/interfaces/libpq/fe-exec.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-exec.c,v 1.184 2006/05/23 22:13:19 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-exec.c,v 1.185 2006/05/28 17:23:29 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -364,6 +364,12 @@ PQclear(PGresult *res)
if (res->tuples)
free(res->tuples);
/* zero out the pointer fields to catch programming errors */
res->attDescs = NULL;
res->tuples = NULL;
res->errFields = NULL;
/* res->curBlock was zeroed out earlier */
/* Free the PGresult structure itself */
free(res);
}