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Try to defend against the possibility that libpq is still in COPY_IN state

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when we reach the post-COPY "pump it dry" error recovery code that was added
2006-11-24.  Per a report from Neil Best, there is at least one code path
in which this occurs, leading to an infinite loop in code that's supposed
to be making it more robust not less so.  A reasonable response seems to be
to call PQputCopyEnd() again, so let's try that.

Back-patch to all versions that contain the cleanup loop.
This commit is contained in:
Tom Lane 2009-08-07 20:16:29 +00:00
parent aea7affde7
commit b09e8b0667
1 changed files with 4 additions and 1 deletions
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5
src/bin/psql/copy.c
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@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.71.2.1 2007/02/05 15:23:24 adunstan Exp $
* $PostgreSQL: pgsql/src/bin/psql/copy.c,v 1.71.2.2 2009/08/07 20:16:29 tgl Exp $
*/
#include "postgres_fe.h"
#include "copy.h"
@ -603,6 +603,9 @@ do_copy(const char *args)
success = false;
psql_error("\\copy: unexpected response (%d)\n",
PQresultStatus(result));
/* if still in COPY IN state, try to get out of it */
if (PQresultStatus(result) == PGRES_COPY_IN)
PQputCopyEnd(pset.db, _("trying to exit copy mode"));
PQclear(result);
}