diff options
| -rw-r--r-- | src/backend/executor/nodeIndexscan.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/src/backend/executor/nodeIndexscan.c b/src/backend/executor/nodeIndexscan.c index 7b96723844b..a7cfce15b4c 100644 --- a/src/backend/executor/nodeIndexscan.c +++ b/src/backend/executor/nodeIndexscan.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/nodeIndexscan.c,v 1.75 2002/12/15 16:17:46 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/nodeIndexscan.c,v 1.76 2002/12/18 00:14:24 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -470,10 +470,13 @@ ExecIndexMarkPos(IndexScanState *node) int indexPtr; indexPtr = node->iss_MarkIndexPtr = node->iss_IndexPtr; - indexScanDescs = node->iss_ScanDescs; - scanDesc = indexScanDescs[indexPtr]; + if (indexPtr >= 0 && indexPtr < node->iss_NumIndices) + { + indexScanDescs = node->iss_ScanDescs; + scanDesc = indexScanDescs[indexPtr]; - index_markpos(scanDesc); + index_markpos(scanDesc); + } } /* ---------------------------------------------------------------- @@ -482,8 +485,6 @@ ExecIndexMarkPos(IndexScanState *node) * old comments * Restores scan position by restoring the current index. * Returns nothing. - * - * XXX Assumes previously marked scan position belongs to current index * ---------------------------------------------------------------- */ void @@ -494,10 +495,13 @@ ExecIndexRestrPos(IndexScanState *node) int indexPtr; indexPtr = node->iss_IndexPtr = node->iss_MarkIndexPtr; - indexScanDescs = node->iss_ScanDescs; - scanDesc = indexScanDescs[indexPtr]; + if (indexPtr >= 0 && indexPtr < node->iss_NumIndices) + { + indexScanDescs = node->iss_ScanDescs; + scanDesc = indexScanDescs[indexPtr]; - index_restrpos(scanDesc); + index_restrpos(scanDesc); + } } /* ---------------------------------------------------------------- |