From: Teodor Sigaev <teodor@sigaev.ru>
Date: Sun, 20 Apr 2008 09:29:48 +0000 (+0000)
Subject: Fix broken compare function for tsquery_ops. Per Tom's report.
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=014ea5ca8e30f42555327e8f48b99ad8a5fbe81f;p=users%2Fbernd%2Fpostgres.git

Fix broken compare function for tsquery_ops. Per Tom's report.

I never understood why initial authors GiST in pgsql choose so
stgrange signature for 'same' method:
bool *sameFn(Datum a, Datum b, bool* result)
instead of simple, logical
bool sameFn(Datum a, Datum b)
This change will break any existing GiST extension, so we still live with
it and will live.
---

diff --git a/src/backend/utils/adt/tsquery_gist.c b/src/backend/utils/adt/tsquery_gist.c
index eb92bffa38..586e8a22e3 100644
--- a/src/backend/utils/adt/tsquery_gist.c
+++ b/src/backend/utils/adt/tsquery_gist.c
@@ -101,8 +101,11 @@ gtsquery_same(PG_FUNCTION_ARGS)
 {
 	TSQuerySign *a = (TSQuerySign *) PG_GETARG_POINTER(0);
 	TSQuerySign *b = (TSQuerySign *) PG_GETARG_POINTER(1);
+	bool		*result = (bool *) PG_GETARG_POINTER(2);
 
-	PG_RETURN_POINTER(*a == *b);
+	*result = (*a == *b) ? true : false;
+
+	PG_RETURN_POINTER(result);
 }
 
 static int