Wrap multixact/members correctly during extension In the 9.2 code for extending multixact/members, the logic was very simple because the number of entries in a members page was a proper divisor of 2^32, and thus at 2^32 wraparound the logic for page switch was identical than at any other page boundary. In commit 0ac5ad5134f I failed to realize this and introduced code that was not able to go over the 2^32 boundary. Fix that by ensuring that when we reach the last page of the last segment we correctly zero the initial page of the initial segment, using correct uint32-wraparound-safe arithmetic.
Noticed while investigating bug #8673 reported by Serge Negodyuck, as diagnosed by Andres Freund. Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/a50d97625497b76e3dc7c4aa22cd2c70317ec54d Modified Files -------------- src/backend/access/transam/multixact.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
