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Fix latent bug in ExecSeqRestrPos: it leaves the plan node's result slot

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in an inconsistent state.  (This is only latent because in reality
ExecSeqRestrPos is dead code at the moment ... but someday maybe it won't
be.)  Add some comments about what the API for plan node mark/restore
actually is, because it's not immediately obvious.
This commit is contained in:
Tom Lane
2005-05-15 21:19:55 +00:00
parent eb0d00a9be
commit 2ef172a2a4
4 changed files with 35 additions and 10 deletions
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6
src/backend/access/index/indexam.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.80 2005/04/14 20:03:23 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.81 2005/05/15 21:19:54 tgl Exp $
*
* INTERFACE ROUTINES
* index_open - open an index relation by relation OID
@@ -411,6 +411,10 @@ index_markpos(IndexScanDesc scan)
/* ----------------
* index_restrpos - restore a scan position
*
* NOTE: this only restores the internal scan state of the index AM.
* The current result tuple (scan->xs_ctup) doesn't change. See comments
* for ExecRestrPos().
* ----------------
*/
void