database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-02 09:02:37 +03:00
Code Activity

Use FLEXIBLE_ARRAY_MEMBER for HeapTupleHeaderData.t_bits[].

Browse Source 
This requires changing quite a few places that were depending on
sizeof(HeapTupleHeaderData), but it seems for the best.

Michael Paquier, some adjustments by me
This commit is contained in:
Tom Lane
2015-02-21 15:13:06 -05:00
parent 3d9b6f31ee
commit e1a11d9311
19 changed files with 102 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/backend/optimizer/plan/subselect.c
View File

@ -974,12 +974,12 @@ subplan_is_hashable(Plan *plan)
/*
* The estimated size of the subquery result must fit in work_mem. (Note:
* we use sizeof(HeapTupleHeaderData) here even though the tuples will
* actually be stored as MinimalTuples; this provides some fudge factor
* for hashtable overhead.)
* we use heap tuple overhead here even though the tuples will actually be
* stored as MinimalTuples; this provides some fudge factor for hashtable
* overhead.)
*/
subquery_size = plan->plan_rows *
(MAXALIGN(plan->plan_width) + MAXALIGN(sizeof(HeapTupleHeaderData)));
(MAXALIGN(plan->plan_width) + MAXALIGN(SizeofHeapTupleHeader));
if (subquery_size > work_mem * 1024L)
return false;