Thread: pgsql: Add lossy indicator to TBMIterateResult

Add lossy indicator to TBMIterateResult

TBMIterateResult->ntuples is -1 when the page in the bitmap is lossy.
Add an explicit lossy indicator so that we can move ntuples out of the
TBMIterateResult in a future commit.

Discussion: https://postgr.es/m/CA%2BhUKGLHbKP3jwJ6_%2BhnGi37Pw3BD5j2amjV3oSk7j-KyCnY7Q%40mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/b8778c4cd8bc924ce5347cb1ab10dfbf34130559

Modified Files
--------------
src/backend/access/gin/ginget.c          |  6 ++++--
src/backend/access/heap/heapam_handler.c | 10 +++++-----
src/backend/nodes/tidbitmap.c            | 11 ++++++++---
src/include/nodes/tidbitmap.h            |  5 +++--
4 files changed, 20 insertions(+), 12 deletions(-)