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Diffstat (limited to 'src/backend/regex/regc_pg_locale.c')
-rw-r--r--src/backend/regex/regc_pg_locale.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/regex/regc_pg_locale.c b/src/backend/regex/regc_pg_locale.c
index a8c0b156fa4..4a808b7606c 100644
--- a/src/backend/regex/regc_pg_locale.c
+++ b/src/backend/regex/regc_pg_locale.c
@@ -263,6 +263,11 @@ pg_set_regex_collation(Oid collation)
errhint("Use the COLLATE clause to set the collation explicitly.")));
}
+ if (pg_regex_locale && !pg_regex_locale->deterministic)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("nondeterministic collations are not supported for regular expressions")));
+
#ifdef USE_ICU
if (pg_regex_locale && pg_regex_locale->provider == COLLPROVIDER_ICU)
pg_regex_strategy = PG_REGEX_LOCALE_ICU;