pg_upgrade: Preserve default char signedness value from old cluster.
Commit 44fe30fdab6 introduced the 'default_char_signedness' field in
controlfile. Newly created database clusters always set this field to
'signed'.
This change ensures that pg_upgrade updates the
'default_char_signedness' to 'unsigned' if the source database cluster
has signedness=false. For source clusters from v17 or earlier, which
lack the 'default_char_signedness' information, pg_upgrade assumes the
source cluster was initialized on the same platform where pg_upgrade
is running. It then sets the 'default_char_signedness' value according
to the current platform's default character signedness.
Reviewed-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/CB11ADBC-0C3F-4FE0-A678-666EE80CBB07%40amazon.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/a8238f87f980848c2d69c105555c4383e20e7670
Modified Files
--------------
src/bin/pg_upgrade/controldata.c | 44 ++++++++++++++++++-
src/bin/pg_upgrade/pg_upgrade.c | 28 +++++++++++++
src/bin/pg_upgrade/pg_upgrade.h | 6 +++
src/bin/pg_upgrade/t/005_char_signedness.pl | 65 +++++++++++++++++++++++++++++
4 files changed, 142 insertions(+), 1 deletion(-)
