From: Jeff Davis Date: Tue, 5 Aug 2025 16:06:05 +0000 (-0700) Subject: Don't copy datlocale from template unless provider matches. X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=295a39770e6f7d9c117d52f86ff0596b7d9a590e;p=thirdparty%2Fpostgresql.git Don't copy datlocale from template unless provider matches. During CREATE DATABASE, if changing the locale provider, require that a new locale is specified rather than trying to reinterpret the template's locale using the new provider. This only affects the behavior when the template uses the builtin provider and CREATE DATABASE specifies the ICU provider without specifying the locale. Previously, that may have succeeded due to loose validation by ICU, whereas now that will cause an error. Because it can cause an error, backport only to unreleased versions. Discussion: https://postgr.es/m/5038b33a6dc639009f4b3d43fa6ae0c5ba9e04f7.camel@j-davis.com Backpatch-through: 18 --- diff --git a/src/backend/commands/dbcommands.c b/src/backend/commands/dbcommands.c index 502a45163c8..92a396b8406 100644 --- a/src/backend/commands/dbcommands.c +++ b/src/backend/commands/dbcommands.c @@ -1052,7 +1052,7 @@ createdb(ParseState *pstate, const CreatedbStmt *stmt) dbctype = src_ctype; if (dblocprovider == '\0') dblocprovider = src_locprovider; - if (dblocale == NULL) + if (dblocale == NULL && dblocprovider == src_locprovider) dblocale = src_locale; if (dbicurules == NULL) dbicurules = src_icurules;