Per buildfarm. Fortunately, it's not quite too late to squeeze this fix
into the pg_trgm 1.3 update.
prorettype = 'gtrgm'::pg_catalog.regtype
WHERE oid = pg_catalog.to_regprocedure('gtrgm_union(internal,internal)');
-ALTER FUNCTION set_limit(float4) PARALLEL RESTRICTED;
+ALTER FUNCTION set_limit(float4) PARALLEL UNSAFE;
ALTER FUNCTION show_limit() PARALLEL SAFE;
ALTER FUNCTION show_trgm(text) PARALLEL SAFE;
ALTER FUNCTION similarity(text, text) PARALLEL SAFE;
CREATE FUNCTION set_limit(float4)
RETURNS float4
AS 'MODULE_PATHNAME'
-LANGUAGE C STRICT VOLATILE PARALLEL RESTRICTED;
+LANGUAGE C STRICT VOLATILE PARALLEL UNSAFE;
-- Deprecated function
CREATE FUNCTION show_limit()