diff options
Diffstat (limited to 'src/backend/access/gist/gist.c')
| -rw-r--r-- | src/backend/access/gist/gist.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c index 7dbc5dd08ec..7172f210286 100644 --- a/src/backend/access/gist/gist.c +++ b/src/backend/access/gist/gist.c @@ -356,6 +356,7 @@ gistplacetopage(GISTInsertState *state, GISTSTATE *giststate, SplitedPageLayout rootpg; BlockNumber blkno = BufferGetBlockNumber(buffer); bool is_rootsplit; + int npage; is_rootsplit = (blkno == GIST_ROOT_BLKNO); @@ -377,6 +378,19 @@ gistplacetopage(GISTInsertState *state, GISTSTATE *giststate, dist = gistSplit(state->r, page, itvec, tlen, giststate); /* + * Check that split didn't produce too many pages. + */ + npage = 0; + for (ptr = dist; ptr; ptr = ptr->next) + npage++; + /* in a root split, we'll add one more page to the list below */ + if (is_rootsplit) + npage++; + if (npage > GIST_MAX_SPLIT_PAGES) + elog(ERROR, "GiST page split into too many halves (%d, maximum %d)", + npage, GIST_MAX_SPLIT_PAGES); + + /* * Set up pages to work with. Allocate new buffers for all but the * leftmost page. The original page becomes the new leftmost page, and * is just replaced with the new contents. |