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Commit273b29d

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Clean up Create/DropReplicationSlot query buffer
CreateReplicationSlot() and DropReplicationSlot() were not cleaning upthe query buffer in some cases (mostly error conditions) which meant asmall leak. Not generally an issue as the error case would result in animmediate exit, but not difficult to fix either and reduces the numberof false positives from code analyzers.In passing, also add appropriate PQclear() calls to RunIdentifySystem().Pointed out by Coverity.
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‎src/bin/pg_basebackup/streamutil.c

Lines changed: 22 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -251,13 +251,17 @@ RunIdentifySystem(PGconn *conn, char **sysid, TimeLineID *starttli,
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{
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fprintf(stderr,_("%s: could not send replication command \"%s\": %s"),
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progname,"IDENTIFY_SYSTEM",PQerrorMessage(conn));
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PQclear(res);
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return false;
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}
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if (PQntuples(res)!=1||PQnfields(res)<3)
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{
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fprintf(stderr,
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_("%s: could not identify system: got %d rows and %d fields, expected %d rows and %d or more fields\n"),
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progname,PQntuples(res),PQnfields(res),1,3);
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PQclear(res);
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return false;
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}
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@@ -277,6 +281,8 @@ RunIdentifySystem(PGconn *conn, char **sysid, TimeLineID *starttli,
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fprintf(stderr,
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_("%s: could not parse transaction log location \"%s\"\n"),
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progname,PQgetvalue(res,0,2));
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PQclear(res);
280286
return false;
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}
282288
*startpos= ((uint64)hi) <<32 |lo;
@@ -331,6 +337,9 @@ CreateReplicationSlot(PGconn *conn, const char *slot_name, const char *plugin,
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{
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fprintf(stderr,_("%s: could not send replication command \"%s\": %s"),
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progname,query->data,PQerrorMessage(conn));
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destroyPQExpBuffer(query);
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PQclear(res);
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return false;
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}
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@@ -340,6 +349,9 @@ CreateReplicationSlot(PGconn *conn, const char *slot_name, const char *plugin,
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_("%s: could not create replication slot \"%s\": got %d rows and %d fields, expected %d rows and %d fields\n"),
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progname,slot_name,
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PQntuples(res),PQnfields(res),1,4);
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destroyPQExpBuffer(query);
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PQclear(res);
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return false;
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}
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@@ -353,11 +365,15 @@ CreateReplicationSlot(PGconn *conn, const char *slot_name, const char *plugin,
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fprintf(stderr,
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_("%s: could not parse transaction log location \"%s\"\n"),
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progname,PQgetvalue(res,0,1));
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destroyPQExpBuffer(query);
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PQclear(res);
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return false;
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}
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*startpos= ((uint64)hi) <<32 |lo;
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}
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destroyPQExpBuffer(query);
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PQclear(res);
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return true;
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}
@@ -384,6 +400,9 @@ DropReplicationSlot(PGconn *conn, const char *slot_name)
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{
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fprintf(stderr,_("%s: could not send replication command \"%s\": %s"),
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progname,query->data,PQerrorMessage(conn));
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destroyPQExpBuffer(query);
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PQclear(res);
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return false;
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}
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@@ -393,6 +412,9 @@ DropReplicationSlot(PGconn *conn, const char *slot_name)
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_("%s: could not drop replication slot \"%s\": got %d rows and %d fields, expected %d rows and %d fields\n"),
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progname,slot_name,
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PQntuples(res),PQnfields(res),0,0);
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destroyPQExpBuffer(query);
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PQclear(res);
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return false;
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}
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