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Clean up possibly-uninitialized-variable warnings reported by gcc 4.x.

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This commit is contained in:
Tom Lane
2005-09-24 22:54:44 +00:00
parent 5d9c6b18d3
commit 303e089df5
17 changed files with 167 additions and 126 deletions
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44
src/backend/optimizer/path/indxpath.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/indxpath.c,v 1.189 2005/09/22 23:25:07 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/indxpath.c,v 1.190 2005/09/24 22:54:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -65,10 +65,9 @@ static bool matches_any_index(RestrictInfo *rinfo, RelOptInfo *rel,
Relids outer_relids);
static List *find_clauses_for_join(PlannerInfo *root, RelOptInfo *rel,
Relids outer_relids, bool isouterjoin);
static bool match_variant_ordering(PlannerInfo *root,
IndexOptInfo *index,
List *restrictclauses,
ScanDirection *indexscandir);
static ScanDirection match_variant_ordering(PlannerInfo *root,
IndexOptInfo *index,
List *restrictclauses);
static List *identify_ignorable_ordering_cols(PlannerInfo *root,
IndexOptInfo *index,
List *restrictclauses);
@ -362,15 +361,15 @@ find_usable_indexes(PlannerInfo *root, RelOptInfo *rel,
root->query_pathkeys != NIL &&
pathkeys_useful_for_ordering(root, useful_pathkeys) == 0)
{
ScanDirection indexscandir;
ScanDirection scandir;
if (match_variant_ordering(root, index, restrictclauses,
&indexscandir))
scandir = match_variant_ordering(root, index, restrictclauses);
if (!ScanDirectionIsNoMovement(scandir))
{
ipath = create_index_path(root, index,
restrictclauses,
root->query_pathkeys,
indexscandir,
scandir,
false);
result = lappend(result, ipath);
}
@ -1304,15 +1303,14 @@ find_clauses_for_join(PlannerInfo *root, RelOptInfo *rel,
* 'restrictclauses' is the list of sublists of restriction clauses
* matching the columns of the index (NIL if none)
*
* Returns TRUE if able to match the requested query pathkeys, FALSE if not.
* In the TRUE case, sets '*indexscandir' to either ForwardScanDirection or
* BackwardScanDirection to indicate the proper scan direction.
* If able to match the requested query pathkeys, returns either
* ForwardScanDirection or BackwardScanDirection to indicate the proper index
* scan direction. If no match, returns NoMovementScanDirection.
*/
static bool
static ScanDirection
match_variant_ordering(PlannerInfo *root,
IndexOptInfo *index,
List *restrictclauses,
ScanDirection *indexscandir)
List *restrictclauses)
{
List *ignorables;
@ -1328,7 +1326,7 @@ match_variant_ordering(PlannerInfo *root,
* won't cope.
*/
if (index->relam != BTREE_AM_OID)
return false;
return NoMovementScanDirection;
/*
* Figure out which index columns can be optionally ignored because
* they have an equality constraint. This is the same set for either
@ -1344,17 +1342,13 @@ match_variant_ordering(PlannerInfo *root,
if (ignorables &&
match_index_to_query_keys(root, index, ForwardScanDirection,
ignorables))
{
*indexscandir = ForwardScanDirection;
return true;
}
return ForwardScanDirection;
if (match_index_to_query_keys(root, index, BackwardScanDirection,
ignorables))
{
*indexscandir = BackwardScanDirection;
return true;
}
return false;
return BackwardScanDirection;
return NoMovementScanDirection;
}
/*