Re: [BUGS] BUG #14596: False primary/unique key constraint violations

CREATE TABLE public.test
(
   name character varying(100),
   index integer,
   CONSTRAINT unique_index PRIMARY KEY (index)
);

And the following sample data:
INSERT INTO "test" ("name", "index") VALUES ('A', 0);
INSERT INTO "test" ("name", "index") VALUES ('B', 1);
INSERT INTO "test" ("name", "index") VALUES ('C', 2);

The following query will fail:
UPDATE "test" SET "index" = "index" + 1 WHERE "index" >= 0;