From: Adam Dickmeiss <adam@indexdata.dk>
Date: Thu, 3 Dec 2009 08:35:03 +0000 (+0100)
Subject: GFS: Avoid piggyback for hits < 0 from backend
X-Git-Tag: v3.0.53~5
X-Git-Url: http://jsfdemo.indexdata.com/cgi-bin?a=commitdiff_plain;h=768512e116b17b25eb4c9e7f43509441c2694107;p=yaz-moved-to-github.git

GFS: Avoid piggyback for hits < 0 from backend

If a backend returns negative hit count, then avoid comparisons against
smallSetUpperBound and largeSetLowerBound. Otherwise a negative size
in call to odr_malloc will occur.
---

diff --git a/src/seshigh.c b/src/seshigh.c
index b0349e7..bdfb499 100644
--- a/src/seshigh.c
+++ b/src/seshigh.c
@@ -2755,7 +2755,9 @@ static Z_APDU *response_searchRequest(association *assoc, request *reqb,
 
         comp.which = Z_RecordComp_simple;
         /* how many records does the user agent want, then? */
-        if (bsrt->hits <= *req->smallSetUpperBound)
+        if (bsrt->hits < 0)
+            *toget = 0;
+        else if (bsrt->hits <= *req->smallSetUpperBound)
         {
             *toget = bsrt->hits;
             if ((comp.u.simple = req->smallSetElementSetNames))